The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6758894 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 06, 2004

Filed:

Apr. 17, 2003
Applicant:
Inventor:

Joel D. Houmes, Hamilton, OH (US);

Assignee:

The Shepherd Color Company, Cincinnati, OH (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C 1/22 ;
U.S. Cl.
CPC ...
C09C 1/22 ;
Abstract

A black pigment substantially free of objectionable transition metal materials is disclosed. This pigment is particularly useful for coloring glass since the absence of the transition metal gives it excellent recycling properties. The pigment is an alkaline earth (preferably strontium) iron maganese oxide material as specifically defined the in the present invention.


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Houmes, Joel. (2004). Strontium iron manganese black pigment (U.S. Patent No. 6758894). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6758894

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