Patent US3493345A successfully refreshed from Google Patents.
US3493345A
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Method of controlling polymer viscosity during synthesis by utilizing motor load
Assignee: EIDP Inc
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Filing: 1967-12-20
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Granted: 1970-02-03
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Expires: 1987-12-20
Abstract
No abstract record available.
Inventors
- 👤 William Thomas Windley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:24
CPC Classifications
G; G05; G05D; G05D24/00; G05D24/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2506
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2536806A
Cited
US2711750A
Cited
US2904401A
Cited
US3036334A
Cited
US3113843A
Cited
US3241599A
Cited
US3357955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |