US4455443A
Expired / Lapsed
US
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Nematic halogen Compound
Assignee: Dainippon Inc
•
Filing: 1982-09-01
•
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 17:21
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
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JPS54148184A
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US4261651A
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US4302352A
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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 |