Adeka Corporation

Harada Industry Co., Ltd.

Dic Corporation

Shinji Iino

Taro Sumi

Eiji Katsuno

Hiroshi Sakata

Hironobu Matsueda

Yukio Tatsumi

Kazuhiro Umehara

Akihiro Kotaka

Yukiya Moriizumi

Yokio Tatsumi

A low-profile composite antenna device includes a base plate, a first antenna, and a second antenna. The first antenna has a patch electrode capable of receiving signals in a first frequency band. The second antenna, which is capable of receiving signals in a second frequency band, has a top load part as a capacitive element. The top load part is disposed near the patch electrode of the first antenna such that it does not cover the patch electrode in a top view and that the patch electrode is located on the longitudinal extension axis of the top load part. The second antenna has at least one stub that electrically divides the longitudinal direction of the top load part into front and rear sections so as to function as a waveguide for the first antenna.

Low-profile composite antenna device

The present invention provides a lubricating oil additive, including: a molybdenum compound (A) represented by the following general formula (1); and a sulfur-based composition (B) containing a sulfur-based compound (b-1) represented by the following general formula (2) and at least one kind of sulfur-based compound (b-2) represented by the following general formula (3) or (4), and a lubricating oil composition containing the additive. In the formula (1), Rto Reach represent alkyl groups having 6 to 18 carbon atoms, the groups being identical to or different from each other, and Xto Xeach independently represent an oxygen atom or a sulfur atom. In the formula (2), Rand Reach represent alkyl groups having 3 to 24 carbon atoms, the groups being identical to or different from each other, and 'a' and “b” each represent a number from 1 to 5. In the formulae (3) and (4), Rto Reach represent alkylene groups having 1 to 28 carbon atoms, the groups being identical to or different from each other, Rand Reach independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and “c” and “d” each independently represent a number from 1 to 8, provided that at least one of Ror Rrepresents an alkyl group having 1 to 3 carbon atoms.

Lubricating oil additive and lubricating oil composition containing same

The present invention provides a lubricating oil additive, including: a molybdenum compound (A) represented by the following general formula (1); and a sulfur-based composition (B) containing a sulfur-based compound (b-1) represented by the following general formula (2) and at least one kind of sulfur-based compound (b-2) represented by the following general formula (3) or (4), and a lubricating oil composition containing the additive. In the formula (1), Rto Reach represent alkyl groups having 6 to 18 carbon atoms, the groups being identical to or different from each other, and Xto Xeach independently represent an oxygen atom or a sulfur atom. In the formula (2), Rrepresents an alkyl group having 1 to 22 carbon atoms, Rrepresents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, Rrepresents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, and 'a' represents a number from 1 to 10. In the formulae (3) and (4), Rto Reach represent alkylene groups having 1 to 28 carbon atoms, the groups being identical to or different from each other, Rand Reach independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and 'b' and &#x201c;c&#x201d; each independently represent a number from 1 to 8, provided that at least one of Ror Rrepresents an alkyl group having 1 to 3 carbon atoms.

A stacked patch antenna includes a circuit board, a first patch antenna, a second patch antenna, and a parasitic element. The first patch antenna is stacked on the circuit board, has a first power feeding line and a first radiation element, and receives signals in a first frequency band. The second patch antenna is stacked on the first patch antennahas a second power feeding line longer than the first power feeding line and penetrating the first radiation element to be connected to a second power feeding portion and a second radiation element smaller in size than the first radiation element, and receives signals in a second frequency band higher than the first frequency band. The parasitic element is a plate-like element disposed above the second patch antenna so as to improve elevation angle reception characteristics of the second patch antenna.

Stacked patch antenna

A lubricating composition including: a base oil, a lubricant additive composition including, as a component (A), an organic molybdenum compound of the formula (1) described in the specification, and as a component (B), an amine compound of the formula (2) described in the specification, and a specific metal-based cleaner, wherein a content of the component (B) is 2.9 to 18.6 parts by mass relative to 100 parts by mass of molybdenum atoms of the component (A), and a content of the metal-based cleaner is 0.1% to 10% by mass relative to a total amount of the lubricating composition, wherein the lubricating composition does not include tetraalkyl thiuram disulphide, and wherein the component (A) in terms of the amount of molybdenum atoms is 400 to 1200 ppm by mass relative to a total amount of the lubricating composition.

Lubricant additive composition, lubricating composition containing same and engine oil composition consisting of lubricating composition

A fuel-saving-type engine oil composition is provided that exhibits a satisfactory friction-reducing effect in a low-viscosity engine oil without being constrained by, for example, high temperatures, low temperatures, low loads, or high loads. The engine oil composition includes: an engine oil having a low-temperature viscosity of from 0 to 10 in SAE viscosity grades and a high-temperature viscosity of from 4 to 20 in the SAE viscosity grades; and a molybdenum compound (A) represented by the following general formula (1): where Rto Reach independently represent a hydrocarbon group having 4 to 18 carbon atoms, and not all of Rto Rrepresent the same group, and when Rand Rrepresent the same group, Rand Rdo not represent the same group, and Xto Xeach independently represent a sulfur atom or an oxygen atom.

Engine oil composition

An internal combustion engine lubricating oil composition containing a base oil that is a hydrocarbon oil containing less than 1% by mass of aromatic components and having a sulphur content of less than 20 ppm by mass; a specific organic molybdenum compound as a component (A) at 300 to 1500 ppm by mass as molybdenum atoms; and a borate ester compound as a component (B) at 100 to 1000 ppm by mass as boron atoms.

Internal combustion engine lubricating oil composition

A composite antenna device is provided that is capable of achieving gain enhancement of a patch antenna and further miniaturization of the entire device size. A composite antenna device capable of receiving signals of a plurality of frequency bands for a vehicle includes a base plate, a first antenna, and a second antenna. The first antenna is constituted by a patch antenna placed on the base plate and capable of receiving signals of a first frequency band. The second antenna is constituted by a capacitive antenna capable of receiving signals of a second frequency band lower than the first frequency band. The second antenna includes a top load portion disposed so as to cover the first antenna and has at least one conductive planar body functioning also as a wave director for the first antenna.

Composite antenna device

A composite patch antenna composite patch antenna device is capable of receiving signals in multiple frequency bands. The composite patch antenna composite patch antenna device includes a circuit board, a gap patch antenna, and a dielectric patch antenna. The gap patch antenna has a radiation element that is disposed in parallel with a predetermined air gap with respect to the circuit board, that has a hole section passing through substantially a center. The dielectric patch antenna is stacked on the radiation element of the gap patch antenna in the state of being electrically insulated, and has a second feeding line that is connected to the radiation electrode and that is connected to the second feeding section the circuit board by passing through the through-hole of the dielectric layer and the hole section of the radiation element of the gap patch antenna.

Composite patch antenna device

A vehicle-mounted patch antenna device includes a substrate, a ground conductor provided on the substrate, an antenna element section, a stub, and a notification circuit section. The antenna element section is provided on a surface that faces a surface on which the ground conductor of the substrate is provided, and includes a power feeding section and a degeneracy separation element section. The stub is provided on a surface on which the antenna element section of the substrate is provided, and is a microstrip line that uses the ground conductor. The notification circuit section is provided on the substrate, and is connected adjacent to an area in which current distribution is minimum in a peripheral area other than an area in which the power feeding section of the antenna element section is provided.

Patch antenna device

Provided is an antioxidant composition, including: a compound (A) represented by the following general formula (1); and an amine-based antioxidant (B) and/or a phenol-based antioxidant (C) other than the compound (A): (wherein R represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and n represents a number from 1 to 3.).

Antioxidant composition and lubricating oil composition containing same

The purpose of the present invention is to provide a thiodicarboxylic acid ester which has high long-term storage stability without inhibiting antioxidant properties and wear-resistant properties of the thiodicarboxylic acid ester. In order to achieve the above-mentioned purpose, the present invention provides a lubricating oil additive composition which is characterized by containing a compound (A) represented by general formula (1) and a compound (B) represented by general formula (2) and by having an acid value of 0.01-0.4 mgKOH/g.  

Growing community of inventors

Tokyo, Japan

Shinji Iino