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.

Date of Patent:
Dec. 11, 2012

Filed:

Oct. 21, 2009
Applicants:

Joel P. Hollingsworth, Oakland, CA (US);

Joshua D. Kuntz, Livermore, CA (US);

Thomas F. Soules, Livermore, CA (US);

Richard L. Landingham, Livermore, CA (US);

Inventors:

Joel P. Hollingsworth, Oakland, CA (US);

Joshua D. Kuntz, Livermore, CA (US);

Thomas F. Soules, Livermore, CA (US);

Richard L. Landingham, Livermore, CA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B28B 1/00 (2006.01); B28B 3/00 (2006.01); B28B 5/00 (2006.01); C04B 33/32 (2006.01); C04B 33/36 (2006.01); C04B 35/64 (2006.01); C04B 35/50 (2006.01);
U.S. Cl.
CPC ...
Abstract

According to one embodiment, a method for forming a composite transparent ceramic preform includes forming a first suspension of oxide particles in a first solvent which includes a first dispersant but does not include a gelling agent, adding the first suspension to a first mold of a desired shape, and uniformly curing the first suspension in the first mold until stable. The method also includes forming a second suspension of oxide particles in a second solvent which includes a second dispersant but does not include a gelling agent, adding the second suspension to the stable first suspension in a second mold of a desired shape encompassing the first suspension and the second suspension, and uniformly curing the second suspension in the second mold until stable. Other methods for forming a composite transparent ceramic preform are also described according to several other embodiments. Structures are also disclosed.


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