US3810858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for recovering polyamide acid values from deteriorated dispersions of polyamide acid
Assignee: General Electric Co
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Filing: 1971-12-13
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Granted: 1974-05-14
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Expires: 1991-12-13
Abstract
Abstract A METHOD IS PROVIDED FOR RECOVERING POLYAMIDE ACID VALUES FROM DETERIORATED POLYAMIDE ACID DISPERSION USEFUL FOR ELECTROCOATING CONDUCTING SUBSTRATED. SOLIDS WHICH HAVE BEEN MECHANICALLY SEPARATED BY CONVENTIONAL MEANS FROM SUCH DETERIORATE AQUEOUS POLYAMIDE ACID DISPERSIONS CAN BE EMPLOYED TO MAKE USEFUL POLYAMIDE ACID MMIXTURES.
Inventors
- 👤 E Boldebuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:03
CPC Classifications
C; C08; C08J; C08J11/00; C08J11/04; C08J11/06; C08J3/00; C08J3/02; C08J3/03; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/4461; C08J2377/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
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References Cited (Backward Citations)
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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) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |