Patent US4005064A successfully refreshed from Google Patents.
US4005064A
Expired / Lapsed
US
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Liquid crystal or mesomorphic 4-methoxyalkoxy-4'-alkyl azoxybenzene compounds
Assignee: OI Glass Inc
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Filing: 1971-05-18
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Granted: 1977-01-25
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Expires: 1991-05-18
Abstract
Abstract There is disclosed the preparation of novel liquid-crystal compounds of the structure: ##STR1## WHERE X AND Y ARE THE SAME OR DIFFERENT INTEGERS OF 1 TO 10, TYPICALLY 1 TO 5, AND WHERE AB is selected from ##STR2##
Inventors
- 👤 Heinz J. Dietrich
- 👤 Edward L. Steiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:44
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/24; C09K19/26
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
36 words
As a composition of matter, a compound having the chemical structure ##STR6##where x and y are the same or different integers of 1 to 10 and where AB is selected from ##STR7##said compound exhibiting liquid-crystal properties.
Claim 2
Dependent Claim
36 words
As a composition of matter, a compound having the chemical structure ##STR6##where x and y are the same or different integers of 1 to 10 and where AB is selected from ##STR7##said compound exhibiting liquid-crystal properties.
Claim 3
Dependent Claim
18 words
The invention of claim 1 wherein x is an integer of 1 to 5 and y is 4.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |