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:
Jul. 21, 1992
Filed:
Jun. 23, 1987
Applicant:
Inventors:
William J Cumming, Chelmsford, MA (US);
Russell A Gaudiana, Merimack, NH (US);
Cynthia McGowan, Stoneham, MA (US);
Richard A Minns, Arlington, MA (US);
Alaric Naiman, Cambridge, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; C09K / ;
U.S. Cl.
CPC ...
25229965 ; 25229966 ; 25229967 ; 25229968 ; 359103 ; 560 59 ;
Abstract
Disclosed are smetic liquid crystal compounds exhibiting ferroelectric behavior and having the formula