US3786116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemically joined,phase separated thermoplastic graft copolymers
Assignee: Research Corp
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Filing: 1972-08-21
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Granted: 1974-01-15
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Expires: 1992-08-21
Abstract
Abstract THE PRESENT INVENTION RELATES TO THERMOPLASTIC GRAFT COPOLYMERS COMPRISED OF COPOLYMERIC BACKBONES CONTAINING A PLURALITY OF UNINTERRUPTED REPEATING UNITS OF THE BACKBONE POLYMER AND AT LAST ONE INTEGRALLY COPOLYMERIZED MOIETY PER BACKBONE POLYMER CHAIN HAVING CHEMICALLY BONDED THERETO A SUBSTANTIALLY LINEAR POLYMER WHICH FORMS A COPOLYMERIZED SIDECHAIN TO THE BACKBONE, WHEREIN EACH OF THE POLYMERIC SIDECHAINS HAS SUBSTANTIALLY THE SAME MOLECULAR WEIGHT AND EACH POLYMERIC SIDECHAIN IS CHEMICALLY BONDED TO ONLY ONE BACKBONE POLYMER.
Inventors
- 👤 R Milkovich
- 👤 M Chiang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:46
CPC Classifications
C; C08; C08G; C08G85/00; C08C; C08C19/00; C08C19/30; C08C19/42; C08C19/44; C08F; C08F290/00; C08F290/02; C08F290/04; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/62
Claims Analysis
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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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |