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:
Apr. 07, 1992
Filed:
Sep. 27, 1990
Applicant:
Inventors:
Raymond L Taylor, Saugus, MA (US);
Hemant D Desai, Billerica, MA (US);
Assignee:
CVD Incorporated, Woburn, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427162 ; 427250 ; 4272552 ; 427314 ;
Abstract
Periodic pulsing of the gaseous reactant flows during chemical vapor deposition of gradient index optical material markedly improves the refractive index homogeneity of the deposit with the frequency of the pulsing being variable over a wide range but the number and size of the inhomogeneities, or nodules, being significantly reduced at higher pulsing frequencies.