US2956899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming graft polymers on a shaped polymeric organic substrate
Assignee: EIDP Inc
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Filing: 1956-10-18
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Granted: 1960-10-18
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Expires: 1976-10-18
Abstract
No abstract record available.
Inventors
- 👤 Edward T Cline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:42
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/16; C08J7/18; D; D06; D06M; D06M14/00; D06M14/18; D06M14/26; D06M14/28; D06M14/30; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE PROCESS WHICH COMPRISES (1) IRRADIATING A SHAPED POLYMERIC ORGANIC SUBSTRATE WITH AT LEAST ABOUT 0.01 WATT-SEC./CM.2 OF SUBSTRATE SURFACE OF IONIZINIG RADIATION IN THE PRESENCE OF ABOUT 10**13 TO 5X10**16 MOLECULES OF OXYGEN/CM.2 OF SUBSTRATE SURFACE, (2) SUBSEQUENTLY CONTACTING THE IRRADIATED SUBSTRATE WITH A CHEMICALLY DISTINCT, UNSATURATED, POLYMERIZABLE MONOMER WITH NO ADDITIONAL ACCESS OF OXYGEN, THEREBY POLYMERIZING THE MONOMER ON AND BONDING IT TO THE SURFACE OF THE SUBSTRATE, (3) REMOVING EXCESS MONOMER FROM CONTACT WITH THE POLYMER, AND (4) FINALLY RECOVERING A GRAFT POLYMER IN THE FORM OF THE ORIGINAL SHAPED SUBSTRATE.
Claim 2
Dependent Claim
94 words
THE PROCESS WHICH COMPRISES (1) IRRADIATING A SHAPED POLYMERIC ORGANIC SUBSTRATE WITH AT LEAST ABOUT 0.01 WATT-SEC./CM.2 OF SUBSTRATE SURFACE OF IONIZINIG RADIATION IN THE PRESENCE OF ABOUT 10**13 TO 5X10**16 MOLECULES OF OXYGEN/CM.2 OF SUBSTRATE SURFACE, (2) SUBSEQUENTLY CONTACTING THE IRRADIATED SUBSTRATE WITH A CHEMICALLY DISTINCT, UNSATURATED, POLYMERIZABLE MONOMER WITH NO ADDITIONAL ACCESS OF OXYGEN, THEREBY POLYMERIZING THE MONOMER ON AND BONDING IT TO THE SURFACE OF THE SUBSTRATE, (3) REMOVING EXCESS MONOMER FROM CONTACT WITH THE POLYMER, AND (4) FINALLY RECOVERING A GRAFT POLYMER IN THE FORM OF THE ORIGINAL SHAPED SUBSTRATE.
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) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |