US3252880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grafting polymers or copolymers
Assignee: Centre National de la Recherche Scientifique
•
Filing: 1955-12-14
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Granted: 1966-05-24
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Expires: 1975-12-14
Abstract
No abstract record available.
Inventors
- 👤 Magat Michel
- 👤 Chapiro Adolphe
- 👤 Sebban Jeanne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:55
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/16; C08J7/18; C08F; C08F291/00; C08F291/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN THE PROCESS FOR PRODUCING GRAFT CO-POLYMERS, THE IMPROVEMENT WHICH COMPRISES SUBJECING TO HIGH ENERGY (IONIZING) RADIATION A POLYMER/MONOMER COMPOSITION BEING A MEMBER OF THE GROUP CONSISTING OF SOLUTIONS CONTAINING SAID POLYMER AND SAID MONMER AND OF SAID POLYMER SWOLLEN WITH SAID MONOMER, SAID MONOMER BEING AT LEAST ONEVINYL COMPOUND OF THE GROUP CONSISTING OF VINYL AND DIVINYL MONOMERS AND SAID POLYMER BEING CONSTITUTED OF A MONOMER DIFFERENT FROM THE VINYL COMPOUND USED, SAID IRRADIATION BEING WITH AN EFFECTIVE RADIATION DOSAGE TO CAUSE GRAFT POLYMERIZATION OF SAID MONOMER ONTO SAID POLYMER.
Claim 2
Dependent Claim
91 words
IN THE PROCESS FOR PRODUCING GRAFT CO-POLYMERS, THE IMPROVEMENT WHICH COMPRISES SUBJECING TO HIGH ENERGY (IONIZING) RADIATION A POLYMER/MONOMER COMPOSITION BEING A MEMBER OF THE GROUP CONSISTING OF SOLUTIONS CONTAINING SAID POLYMER AND SAID MONMER AND OF SAID POLYMER SWOLLEN WITH SAID MONOMER, SAID MONOMER BEING AT LEAST ONEVINYL COMPOUND OF THE GROUP CONSISTING OF VINYL AND DIVINYL MONOMERS AND SAID POLYMER BEING CONSTITUTED OF A MONOMER DIFFERENT FROM THE VINYL COMPOUND USED, SAID IRRADIATION BEING WITH AN EFFECTIVE RADIATION DOSAGE TO CAUSE GRAFT POLYMERIZATION OF SAID MONOMER ONTO SAID POLYMER.
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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) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |