Patent US3776956A successfully refreshed from Google Patents.
US3776956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous composition
Assignee: Lion Fat and Oil Co Ltd
•
Filing: 1971-04-16
•
Granted: 1973-12-04
•
Expires: 1991-04-16
Abstract
Abstract A METHOD OF SYNTHESIZING SPECIFIC ETHYLENIC TYPE UNSATURATED ACRYLAMIDE (I) BY EFFECTIN DEHYDROHALOGENATION OF A SPECIFIC ETHYLENIC TYPE UNSATURATED CARBOXYLIC HALIDE (II) OR HALOGENATED CARBOXYLIC HALIDE (III) AND A SPECIFIC AMINE (IV), WHEREIN A SPECIFIC AMINE (V) IS EMPLOYED AS A DEHYDROHALOGENATING AGENT; AND A COPOLYMER CONSISTING OF THE FOREGOING COMPOUND (I) AND A MONOMER CAPABLE OF COPOLYMERIZING WITH SAID COMPOUND (I) AS WELL AS A RESINOUS COMPOSTION COMPRISING SAID COPOLYMER.
Inventors
- 👤 I Yamane
- 👤 D Saika
- 👤 S Tomidokoro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:35
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/58; C08L; C08L33/00; C08L33/24; C08L33/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |