US3353988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft polymerization on polymeric substrates
Assignee: EIDP Inc
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Filing: 1964-05-20
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Granted: 1967-11-21
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Expires: 1984-05-20
Abstract
No abstract record available.
Inventors
- 👤 Wolinski Leon Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:20
CPC Classifications
B; B29; B29C; B29C71/00; B29C71/0009; B05; B05D; B05D3/00; B05D3/10; B05D3/101; B05D3/14; B05D3/141; B05D3/142; B05D3/144; B29C59/00; B29C59/10; C; C08; C08J; C08J7/00; C08J7/12; C08J7/16; C08J7/18; B05D1/00; B05D1/18; B05D2201/00; B05D2252/00; B05D2401/00; B05D2401/30; B05D2401/31; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31938
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PROGRESS WHICH COMPRISES, IN COMBINATION, THE SEQUENTIAL STEPS OF (1) SUBJECTING AN ORGANIC POLYMERIC SHAPED STUCTURE TO THE ACTION OF AN ELECTRICAL DISCHARGE IN AIR AT SUBSTANTIALLY ATMOSPHERIC PRESSURE BETWEEN SPACED ELECTRODES MAINTAINED AT A VOLTAGE DIFFERENTIAL IN EXCESS OF ABOUT 1000 VOLTS, SAID ELECTRICAL DISCHARGE HAVING AN AVERAGE ENERGY LEVEL BELOW 15 ELECTRON VOLTS; (2) CONTACTING THE SURFACE OF THE RESULTING POLYMERIC SHAPED STRUCTURE WITH AN AGENT CAPABLE OF PROVIDING A SOURCE OF FREE RADICALS; AND (3) SUBSTANTIALLY IMMEDIATELY THEREAFTER CONTACTING THE SURFACE OF THE POLYMERIC SHAPED STRUCTURE WITH AN ETHYLENICALLY UNSATURATED MONOMER WHEREBY TO FORM ON SAID SURFACE AN ADHERENT POLYMERIC COATING.
Claim 2
Dependent Claim
105 words
A PROGRESS WHICH COMPRISES, IN COMBINATION, THE SEQUENTIAL STEPS OF (1) SUBJECTING AN ORGANIC POLYMERIC SHAPED STUCTURE TO THE ACTION OF AN ELECTRICAL DISCHARGE IN AIR AT SUBSTANTIALLY ATMOSPHERIC PRESSURE BETWEEN SPACED ELECTRODES MAINTAINED AT A VOLTAGE DIFFERENTIAL IN EXCESS OF ABOUT 1000 VOLTS, SAID ELECTRICAL DISCHARGE HAVING AN AVERAGE ENERGY LEVEL BELOW 15 ELECTRON VOLTS; (2) CONTACTING THE SURFACE OF THE RESULTING POLYMERIC SHAPED STRUCTURE WITH AN AGENT CAPABLE OF PROVIDING A SOURCE OF FREE RADICALS; AND (3) SUBSTANTIALLY IMMEDIATELY THEREAFTER CONTACTING THE SURFACE OF THE POLYMERIC SHAPED STRUCTURE WITH AN ETHYLENICALLY UNSATURATED MONOMER WHEREBY TO FORM ON SAID SURFACE AN ADHERENT POLYMERIC COATING.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |