Ferro Corporation

Dmc2 Degussa Metals Catalysts Cerdec Ag

Terry J Detrie

George E Sakoske

Daniel Russell Swiler

Joseph E Sarver

Stephen Rozwood

Enos Ayres Axtell, Iii

Ronald M Harris

Hans-Peter Letschert

David C Kapp

Robert Michael Sullivan

Stephan Ludwig

Kimberly Ann Stewart

Gilbert B Burkhart, Iii

Richard A Pipoly

Sean T Weir

Gary L Nuccetelli

Lei Wang

Bertram Gardner

Raymond E Barnes

Elena D Milliken

Jacqueline C Livingston

Various laser marking compositions and related methods are described. The laser marking compositions include a molybdenum metal complex, a tungsten metal complex, or combinations thereof. Marks or other indicia formed on a substrate using the compositions and methods exhibit increased contrast and improved substrate bonding.

Laser absorbing compounds

Copper oxide particles having particular starting size and surface area characteristics can be processed by heat and milling to achieve sizes and particle size distributions that give the copper oxide properties as an infrared reflective pigment without addition of other metals or oxides.

Copper oxide infrared pigment

A green pigment is a blend of metal oxides including a [124] spinel which can contain certain combinations of lithium, sodium, cobalt, zinc, calcium, magnesium, copper, titanium, manganese, tin, and germanium, and a [134] spinel which can contain certain combinations of lithium, sodium, chromium, boron, iron, manganese aluminum, titanium, tin and germanium. The pigment lacks nickel.

Nickel-free green pigment

The present invention provides methods of forming and detecting non-visible marks and articles marked in accordance with the methods. In accordance with the methods of the invention, a marking material is applied to a substrate to form a mark that is contrastable from the substrate in one or more regions of the infrared portion of the electromagnetic spectrum. The mark is covered with a film, which can be a bonded coating or a non-bonded covering sheet, that comprises an amount of one or more inorganic pigments such that the film appears opaque in the visible portion of the electromagnetic spectrum but is sufficiently transmissive in one or more regions of the infrared portion of the electromagnetic spectrum to facilitate the detection of the mark covered by the film. The non-visible marks can be applied to articles such as automobile parts, aircraft parts and other articles of manufacture to deter counterfeiting.

Methods of forming and detecting non-visible marks and articles marked in accordance with the methods

The present invention provides inorganic pigments including cobalt and aluminum having the spinel crystalline structure that exhibit improved color and/or weatherability in paint and polymer applications. Inorganic pigments according to the invention are formed by adding small quantities of a phosphate compound such as aluminum phosphate and, optionally, chromium (III) oxide, to a raw batch that includes a mixture of cobalt-containing and aluminum-containing inorganic pigment precursors, and calcining the raw batch to obtain the inorganic pigment.

Inorganic pigments

Rare earth-transition metal oxides are used as pigments. The rare earth-transition metal oxide pigments are preferably of the formula (Re Tm)O , where Re is at least one rare earth element, Tm is at least one transition metal, x ranges from 0.08 to 12, and y ranges from x&plus;1 to 2x&plus;2. The pigments are useful as colorants, and possess good stability.

Rare earth-transition metal oxide pigments

Alkaline earth-manganese oxides are used as pigments. The alkaline earth-manganese oxide pigments are preferably of the formula Me MnO , where Me is at least one metal selected from Ca, Sr, Ba and Mg, x is from 0.01 to 99, and y is greater than or equal to x&plus;1 and less than or equal to x&plus;2. The pigments are useful as colorants, and also possess improved reflectance characteristics, particularly in the IR region, and may reduce IR-induced heat buildup. These colorants can be used to form colored objects, or coat objects when they are either added into or applied onto materials such as paints, inks, plastics, glasses, ceramics and the like. The patent also covers the production of these pigments.

Alkaline earth-manganese oxide pigments

Growing community of inventors

Washington, PA, United States of America

Terry J Detrie