US3644466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha-cyano-beta beta-diphenylacrylic acid esters
Assignee: GAF Corp
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Filing: 1966-05-06
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Granted: 1972-02-22
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Expires: 1986-05-06
Abstract
Abstract THE ULTRA-VIOLET LIGHT ABSORBING COMPOUND OF THE FORMULA: (AR)1-C(-(AR)2)=C(-CN)-COO-Y WHEREIN: (1) (AR)1 AND (AR)2 ARE AROMATIC CARBOCYCLIC NUCLEI DEVOID OF NITRO AND NUCLEAR BONDED AMINE GROUPS AND SELECTED FROM THE CLASS CONSISTION GO MONO- AND BICYCLIC NUCLEI, AND (2) Y IS A SUBSTITUTED ALKYL GROUP SELECTED FROM THE CLASS CONSISTING OF HYDROXY ALKYL, CYANOALKYL, HALOALKYL, ALKOXYALKYL, HYDROXY ALKOXYALKYL AND CARBALKOCYALKYL.
Inventors
- 👤 Albert F Strobel
- 👤 Sigmund C Catino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:32
CPC Classifications
C; C07; C07C; C07C255/00; C08; C08K; C08K5/00; C08K5/16; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |