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.:
Date of Patent:
Jan. 17, 1995
Filed:
May. 19, 1993
Applicant:
Inventor:
Willis H Smith, Jr, Newbury Park, CA (US);
Assignee:
Hughes Aircraft Company, Los Angeles, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
4271263 ; 427166 ; 427167 ; 4272551 ; 4273762 ;
Abstract
An electrically-conducting substrate coated with silicon dioxide is contacted with alcohol vapors from a source (12) by heating the substrate (16) in a microwave oven. The substrate and source of alcohol are contained in a vessel (10), on which a vacuum is optionally pulled during the heating. The process results in approximately 100 fold reduction in processing time from the prior art time of several hours to several minutes. The process may be used in either inducing perpendicular alignment or parallel alignment of liquid crystals in the cell.