Other

Motorola Corporation

Stephen W Thompson

William M Ingle

Robert A Frosch

Richard S Rosler

Robert D Darnell

Robert E Chaney

Harry G Smith

Stretch mark prevention undergarments () worn around a woman's abdomen, chest, lower torso, legs, buttocks and other areas for reinforcing elastic fibers in the skin and preventing stretch marks. The stretch mark prevention undergarment has an outer layer () made of stretchable material and an inner layer () of material made of a non-slip material (). The non-slip material maintains a constant adherent traction with the skin of a wearer, thereby reinforcing elastic fibers of skin. The inner layer is arranged in a predetermined pattern or design to allow a wearer's skin to breathe through the outer layer of the stretch mark prevention undergarment. The stretch mark prevention undergarment may be in the form of underwear (), briefs, underpants, panties, leggings (), corsets, bras () or any combination thereof to help prevent stretch marks on various parts of the body.

Stretch mark prevention undergarment

Stretch mark prevention undergarments () worn around a woman's abdomen, chest, lower torso, legs, buttocks and other areas for reinforcing elastic fibers in the skin and preventing stretch marks. The stretch mark prevention undergarment has an outer layer () made of stretchable material and an inner layer () of webbed material made of a non-slip material (). The non-slip material maintains a constant adherent traction with the skin of a wearer, thereby reinforcing elastic fibers of skin. The inner layer is arranged in a webbed 'fishnet' or other design to allow a wearer's skin to breath through the outer layer of the stretch mark prevention undergarment. The stretch mark prevention undergarment may be in the form of underwear (), briefs, underpants, panties, leggings (), corsets, bras () or any combination thereof to help prevent stretch marks on various parts of the body.

A calendar date monitoring system particularly effective for monitoring pregnancy and other medical conditions is disclosed. The system includes a substantially flat calendar strip, which includes a first set of indicia arranged longitudinally on the calendar strip to define calendar days and months. A substantially flat interval strip includes a second set of indicia arranged longitudinally,on the interval strip to define predetermined time intervals. The second set of indicia include a first guide mark formed proximate one end of the interval strip, a second guide mark formed proximate the opposite end of the interval strip and a plurality of intermediate marks arranged between the first and second guide marks. The calendar strip and the interval strip are held in a longitudinally juxtaposed condition such that the first and second guide marks are aligned with selected indicia representing first and second dates on the calendar strip and the intermediate marks are aligned with indicia representing corresponding intermediate dates on the calendar strip.

Calendar date monitoring system

An improved means and method for extracting polycrystalline silicon from silicon source gases is provided wherein seed particles and source gases are reacted in a rising particle reaction chamber in which the gas velocity is sufficient to entrain and eject all seed particles smaller than a predetermined size while those which have grown to a larger size fall through the rising gas stream and are extracted from the base of the reactor. Those seed particles which are ejected from the reaction column are separated from the spent gases and fall back into a concentric reservoir. A first gas not containing any silicon is supplied to a nozzle within the reservoir and creates a first gas-particle mixture which is injected into an auxiliary mixing chamber, where it is further mixed with a high velocity lifting gas which includes the source gases. The lifting and source gas-particle mixture is swept through the reactor where silicon deposits on the seed particles. The seed particles recirculate from reaction column to reservoir to reaction column until they have achieved sufficient size so as to be automatically harvested by the differential lifting action in the reaction column.

Ascending differential silicon harvesting means and method

A reduced pressure induction heated reactor and method for the deposition, especially epitaxial deposition, onto workpieces placed in the reactor. The workpieces are positioned within a hollow susceptor which is, in turn, positioned within a reactor tube. The ends of the reactor tube are sealed by end caps which provide for input and exhaust of reactant species. The workpieces are inductively heated by an RF induction coil which surrounds the reactor tube and which inductively couples with the susceptor. A vacuum pump maintains a low pressure within the reactor tube. Low pressure deposition is made possible without arcing by shorting together the susceptor and end caps and by having the shorted together combination electrically floating.

Reduced pressure induction heated reactor and method

A method wherein a quartz tube is charged with chunks of metallurgical grade silicon and/or a mixture of such chunks and high purity quartz sand, and impurities from a class including aluminum, boron, and the like, as well as certain transition metals including nickel, iron, manganese and the like. The tube is then evacuated and heated to a temperature within a range of 800.degree. C. to 1400.degree. C., whereupon a stream of gas comprising a reactant, such as silicon tetrafluoride, continuously is delivered at low pressures through the charge for causing a metathetical reaction of impurities of the silicon and the reactant to occur for forming a volatile halide and leaving a residue of silicon of an improved purity. Additionally, the reactant may include carbon monoxide gas, whereby impurites such as iron and nickel react therewith to form volatile carbonyls.

Method of purifying metallurgical grade silicon employing reduced

A process for producing semiconductor grade silicon. Metallurgical grade silicon, silicon dioxide, and silicon tetrafluoride are chemically combined at an elevated temperature to form silicon difluoride gas. The silicon difluoride gas is then polymerized, preferably in a two-step process. An initial small quantity of silicon difluoride polymers is formed at a first temperature. This initial polymerization removes most of the impurities that were present in the original metallurgical grade silicon and which were transported by the silicon difluoride gas. The bulk of the remaining silicon difluoride gas is then polymerized at a second, lower temperature. These polymers are substantially free from all impurities. The pure silicon difluoride polymers are then thermally decomposed at temperatures below 400.degree. C. to form binary silicon fluoride homologues. The homologues can be distilled for even higher purity, or can be used or stored as formed. The binary silicon fluoride homologues produce pure silicon and silicon tetrafluoride when heated to a temperature between 400.degree. C. and 950.degree. C. The disproportionation of the homologues can be accomplished by chemical vapor deposition techniques onto heated substrates of silicon, metal, or quartz. This disproportionation will result in amorphous, polycrystalline, or monocrystalline silicon depending on the temperatures employed and on the substrate used for deposition.

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Phoenix, AZ, United States of America

Stephen W Thompson