Patent US3864148A successfully refreshed from Google Patents.
Patent US4455443A successfully refreshed from Google Patents.
US4455443A
Expired / Lapsed
US
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Nematic halogen Compound
Assignee: Dainippon Inc
•
Filing: 1982-09-01
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Granted: 1984-06-19
•
Expires: 2002-09-01
Abstract
Abstract A compound of the formula <IMAGE> wherein R represents a linear alkyl group having 1 to 7 carbon atoms, n represents an integer of 1 or 2, and X represents F when n is 1 and F or Cl when n is 2.
Inventors
- 👤 Haruyoshi Takatsu
- 👤 Hisato Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:23
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/35; C07C25/00; C07C25/18; C07C45/00; C07C45/45; C07C45/46; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3028
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
43 words
A compound of the formula ##STR30## wherein R represents a linear alkyl group having 1 to 7 carbon atoms, n represents an integer of 1 or 2, and X represents F when n is 1 and F or Cl when n is 2.
Claim 2
Dependent Claim
43 words
A compound of the formula ##STR30## wherein R represents a linear alkyl group having 1 to 7 carbon atoms, n represents an integer of 1 or 2, and X represents F when n is 1 and F or Cl when n is 2.
Claim 3
Dependent Claim
7 words
A compound of the following formula: ##STR31##
Claim 4
Dependent Claim
7 words
A compound of the following formula: ##STR31##
Claim 5
Dependent Claim
7 words
A compound of the following formula: ##STR32##
Claim 6
Dependent Claim
7 words
A compound of the following formula: ##STR32##
Claim 7
Dependent Claim
7 words
A compound of the following formula: ##STR33##
Claim 8
Dependent Claim
7 words
A compound of the following formula: ##STR33##
Claim 9
Dependent Claim
7 words
A compound of the following formula: ##STR34##
Claim 10
Dependent Claim
7 words
A compound of the following formula: ##STR34##
Claim 11
Dependent Claim
7 words
A compound of the following formula: ##STR35##
Claim 12
Dependent Claim
7 words
A compound of the following formula: ##STR35##
Claim 13
Dependent Claim
7 words
A compound of the following formula: ##STR36##
Claim 14
Dependent Claim
7 words
A compound of the following formula: ##STR36##
Claim 15
Dependent Claim
7 words
A compound of the following formula: ##STR37##
Claim 16
Dependent Claim
7 words
A compound of the following formula: ##STR37##
Claim 17
Dependent Claim
7 words
A compound of the following formula: ##STR38##
Claim 18
Dependent Claim
7 words
A compound of the following formula: ##STR38##
Claim 19
Dependent Claim
7 words
A compound of the following formula: ##STR39##
Claim 20
Dependent Claim
7 words
A compound of the following formula: ##STR39##
Claim 21
Dependent Claim
7 words
A compound of the following formula: ##STR40##
Claim 22
Dependent Claim
7 words
A compound of the following formula: ##STR40##
Claim 23
Dependent Claim
7 words
A compound of the following formula: ##STR41##
Claim 24
Dependent Claim
7 words
A compound of the following formula: ##STR41##
Claim 25
Dependent Claim
7 words
A compound of the following formula: ##STR42##
Claim 26
Dependent Claim
7 words
A compound of the following formula: ##STR42##
Claim 27
Dependent Claim
7 words
A compound of the following formula: ##STR43##
Claim 28
Dependent Claim
7 words
A compound of the following formula: ##STR43##
Claim 29
Dependent Claim
7 words
A compound of the following formula: ##STR44##
Claim 30
Dependent Claim
7 words
A compound of the following formula: ##STR44##
References Cited (Backward Citations)
US4035056A
Cited
JPS54148184A
Cited
US4261651A
Cited
US4302352A
Cited
US4386007A
Cited
US4340498A
Cited
JPS5750935A
Cited
DE3139130A1
Cited
JPS5764645A
Cited
GB2086385A
Cited
US4400293A
Cited
EP0051738A1
Cited
US4415470A
Cited
JPS5795933A
Cited
GB2092146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-19 | 1987-12-19 | 1988-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-19 | 1991-12-19 | 1992-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-19 | 1995-12-19 | 1996-06-19 | $7700.00 | Window Closed / Lapsed |