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:
Nov. 24, 1992
Filed:
Aug. 23, 1991
Applicant:
Inventors:
Mitsuru Hashimoto, Numazu, JP;
Masaomi Sasaki, Susono, JP;
Tomoyuki Shimada, Numazu, JP;
Nobuo Suzuki, Saitama, JP;
Takayuki Sakai, Tokyo, JP;
Susumu Suzuka, Yono, JP;
Assignees:
Ricoh Company, Ltd., Tokyo, JP;
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
564374 ; 430 57 ; 430 58 ; 430 59 ; 430 60 ; 430 62 ; 430 67 ; 430 69 ; 544 35 ; 544 38 ; 548444 ; 549 59 ; 564378 ; 564379 ; 564384 ; 564387 ; 564391 ; 564427 ; 564428 ; 564429 ; 564434 ; 564442 ; 564443 ;
Abstract
A charge transporting material comprising a 1,3-pentadiene derivative having formula (I):