Patent US3052646A successfully refreshed from Google Patents.
US3052646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blend of finely divided polyamide and polyethylene glycol
Assignee: Polymer Processes Inc
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Filing: 1953-07-06
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Granted: 1962-09-04
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Expires: 1973-07-06
Abstract
No abstract record available.
Inventors
- 👤 Roger H Doggett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:18
CPC Classifications
C; C08; C08L; C08L77/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A DRY INTIMATE MIXTURE CONSISTING ESSENTIALLY OF A FINELY DIVIDED FIBER-FORMING SYNTHETIC LINEAR POLYMERIC CARBONMIDE WHICH CONTAINS RECURING CARBONAMIDE GROUPS AS AN INTEGRAL PART OF THE MAIN POLYMER CHAIN SEPARATED BY AT LEAST TWO CARBON ATOMS AND SOLID POLYETHYLENE GLYCOL, SAID POLYETHYLENE GLYCOL BEING PRESENT IN AN AMOUNT EQUAL TO FROM 0.5%-3% BY WEIGHT OF SAID POLYMERIC CARBONAMIDE, THE MOLECULAR WEIGHT OF SAID POLYETHYLENE GLYCOL BEING BETWEEN 4000 AND 8000, THE ULTIMATE PARTICLE SIZE OF SAID POLYMERIC CARBONAMIDE BEING LESS THAN 40 MICRONS IN DIAMETER.
Claim 2
Dependent Claim
85 words
A DRY INTIMATE MIXTURE CONSISTING ESSENTIALLY OF A FINELY DIVIDED FIBER-FORMING SYNTHETIC LINEAR POLYMERIC CARBONMIDE WHICH CONTAINS RECURING CARBONAMIDE GROUPS AS AN INTEGRAL PART OF THE MAIN POLYMER CHAIN SEPARATED BY AT LEAST TWO CARBON ATOMS AND SOLID POLYETHYLENE GLYCOL, SAID POLYETHYLENE GLYCOL BEING PRESENT IN AN AMOUNT EQUAL TO FROM 0.5%-3% BY WEIGHT OF SAID POLYMERIC CARBONAMIDE, THE MOLECULAR WEIGHT OF SAID POLYETHYLENE GLYCOL BEING BETWEEN 4000 AND 8000, THE ULTIMATE PARTICLE SIZE OF SAID POLYMERIC CARBONAMIDE BEING LESS THAN 40 MICRONS IN DIAMETER.
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) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |