US3107206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of graft polymers
Assignee: Rhone Poulenc SA
•
Filing: 1958-08-25
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Granted: 1963-10-15
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Expires: 1978-08-25
Abstract
No abstract record available.
Inventors
- 👤 Cottet Emile Clement
- 👤 Ducros Andre Claude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:56
CPC Classifications
C; C08; C08F; C08F291/00; C08F291/18; D; D06; D06M; D06M14/00; D06M14/18; D06M14/26; D06M14/28; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
PROCESS FOR THE PRODUCTION OF A GRAFT COPOLYMER WHICH IS SUBSTANTIALLY FREE FROM HOMOPOLYMER, WHICH COMPRISES SUBJECTING A STEM POLYMER WHICH IS IN THE SOLID STATE AND SWOLLEN BY A NON-POLLYMERISABLE SWELLING AGENT TO THE ACTION OF HIGH ENERGY IONISING RADIATION IN THE PRESENCE OF THE UNSATURATED VAPOUR OF A POLYMERISABLE MONOMER.
Claim 2
Dependent Claim
52 words
PROCESS FOR THE PRODUCTION OF A GRAFT COPOLYMER WHICH IS SUBSTANTIALLY FREE FROM HOMOPOLYMER, WHICH COMPRISES SUBJECTING A STEM POLYMER WHICH IS IN THE SOLID STATE AND SWOLLEN BY A NON-POLLYMERISABLE SWELLING AGENT TO THE ACTION OF HIGH ENERGY IONISING RADIATION IN THE PRESENCE OF THE UNSATURATED VAPOUR OF A POLYMERISABLE MONOMER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |