Patent US3243476A successfully refreshed from Google Patents.
US3243476A
Expired / Lapsed
US
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Graft copolymer of a 5-6 membered lactam ring onto a polyacrylyl halide backbone
Assignee: Monsanto Co
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Filing: 1962-12-10
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Granted: 1966-03-29
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Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 William B Black
- 👤 David B Capps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:20
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; Y; Y10; Y10S; Y10S8/00; Y10S8/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A GRAFT COPOLYMER OF THE FORMULA:
Claim 2
Dependent Claim
6 words
A GRAFT COPOLYMER OF THE FORMULA:
References Cited (Backward Citations)
US3136738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |