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US3784513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(p-alkanoyloxybenzylidene)-p'-n-butylaniline
Assignee: OI Glass Inc
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Filing: 1971-08-04
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Granted: 1974-01-08
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Expires: 1991-08-04
Abstract
Abstract THERE IS DISCLOSED THE PREPARATION OF NOVEL LIQUID-CRYSTAL COMPOSITION OF THE STRUCTURE: 1-((4-(CXH(2X+1)-COO-)PHENYL)-CH=N-),4-(C4H9-)BENZENE WHERE X EQUALS 1 TO 10, TYPICALLY 1 TO 5. THE COMPOUNDS ARE PREPARED BY THE REACTION OF PARA-N-BUTYLANILINE AND PARA-N-ALKANOYLOXYBENZALDEHYDE.
Inventors
- 👤 E Steiger
- 👤 H Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:54
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |