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US3580730A
Expired / Lapsed
US
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Discontinuous polycarbonate coatings
Assignee: GE Chemicals Inc
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Filing: 1968-06-12
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Granted: 1971-05-25
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Expires: 1988-06-12
Abstract
Abstract A METHOD OF PROVIDING A DISCONTINUOUS POLYCARBONATE COATING ON A THERMOPLASTIC SUBSTRATE COMPRISING THE STEPS SOLVENT, APPLYING THE RESULTING SOLUTION TO A THERMOPLASTIC SUBSTRATE, EVAPORATING THE SOLVENT TO FORM A CONTINUOUS POLYCARBONATE COATING, AND SUBSEQUENTLY TREATING THE COATING WITH A DEVELOPING SOLVENT TO FORM A DISCONTINUOUS COATING.
Inventors
- 👤 Thomas S Grabowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:26
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/06; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J2469/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/31504; Y10T428/31507
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |