LED lamp configured to minimize image contrast
The LED chip may be a four-element LED chip composed of an active layer of AlGaInP and the light-absorbing layer formed from any of black silver sulfide, silver oxide, iron oxide, chromium oxide, ...
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LED lamp and LED lamp manufacturing method
The LED chip may be a four-element LED chip composed of an active layer of AlGaInP and the light-absorbing layer formed from any of black silver sulfide, silver oxide, iron oxide, chromium oxide, ...
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Transparent iron oxide pigments
... to a process for preparing transparent iron oxide pigments comprising reacting an iron compound, an ammonia releasing compound and water in a non-aqueous solvent in which both the iron compound and ...
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Plastic colored with transparent iron oxide spinels
... transparent iron oxide spinels. Document Type: Patent. Inventor: Netherton, Lowell E.;Patil, Arvind S.. Applicant: Assignee: BASF Wyandotte Corporation. Patent Number: 04403060 04403060A 04403060 A 04 ...
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Preparation of transparent yellow iron oxide pigments
A process for preparing transparent yellow iron oxide pigments by the precipitation of iron (II) hydroxide by adding an inorganic base to an iron (II) salt solution and subsequent oxidation to FeOOH. ...
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Transparent iron oxide pigments
In accordance with the instant invention red transparent iron oxide pigment is prepared from yellow transparent iron oxide pigment filter cake by drying and calcining in a single operation using a ...
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Soft iron pigments
Patent Publication Date: Flat metal oxide-covered white iron pigment comprises a substrate of reduced carbonyl iron powder and an oxide coating of a transparent or selectively absorbent metal oxide. ...
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Transparent, fixed tint glass lenses
... in terms of weight percent on an oxide basis, at least 6.2% iron oxides, at least 0.03% cobalt oxide and at least 0.12% nickel oxide in the presence of an oxidizing agent such as arsenic oxide. ...
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Highly transparent, edge colored glass
... preferably greater than 90 percent, luminous transmittance by using very small amounts of iron oxide as the sole essential colorant, with the ratio of iron in the ferrous state to total iron being at ...
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Transparent, fixed tint glass lenses
... in terms of weight percent on an oxide basis, at least 6.2% iron oxides, at least 0.03% cobalt oxide and at least 0.12% nickel oxide in the presence of an oxidizing agent such as arsenic oxide. ...
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