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US4946986A Expired / Lapsed US ⏱️ 0.0 years remaining

Cyclohexene derivatives

Assignee: DIC Corp
•
Filing: 1989-02-27
•
Granted: 1990-08-07
•
Expires: 2009-02-27
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Abstract

Abstract A novel tetracyclic cyclohexylcyclohexene derivatives represented by formula: ##STR1## wherein ##STR2## n, X and Y are as defined in claim 1, are disclosed. The compounds are useful as electroptic display materials.

Inventors

  • 👤 Yasuyuki Tanaka
  • 👤 Haruyoshi Takatsu
  • 👤 Kiyohumi Takeuchi
  • 👤 Yuji Tamura

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 07:02
CPC Classifications
C; C07; C07C; C07C255/00; C07C255/49; C07C255/50; C07C13/00; C07C13/28; C07C25/00; C07C25/18; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3098; C07C2601/00; C07C2601/12; C07C2601/16

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 26 words
A compound represented by the general formula: ##STR93## wherein R is a straight-chained alkyl group having 1-9 carbon atoms; ##STR94## and X is a cyano group.
Claim 2
Dependent Claim 26 words
A compound represented by the general formula: ##STR93## wherein R is a straight-chained alkyl group having 1-9 carbon atoms; ##STR94## and X is a cyano group.
Claim 3
Dependent Claim 8 words
A compound according to claim 1, wherein ##STR95##
Claim 4
Dependent Claim 8 words
A compound according to claim 1 wherein ##STR96##
Claim 5
Dependent Claim 10 words
A compound according to claim 2, wherein R is propyl.
Claim 6
Dependent Claim 10 words
A compound according to claim 3, wherein R is propyl.

References Cited (Backward Citations)

US4505837A Cited
US4405488A Cited
US4422951A Cited
US4439340A Cited
US4477369A Cited
US4620938A Cited
US4472293A Cited
JPS5916840A Cited
US4536321A Cited
US4698177A Cited
US4822519A Cited
US4814523A Cited
DE3717397A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-08-06 1994-02-05 1994-08-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-08-06 1998-02-05 1998-08-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-08-06 2002-02-05 2002-08-07 $7700.00 Window Closed / Lapsed

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