US3137669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyoxymethylene resins modified with glycerine to improve impact strength
Assignee: EIDP Inc
•
Filing: 1960-07-29
•
Granted: 1964-06-16
•
Expires: 1980-07-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Chester Griswold Bragaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:27
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
THE COMPOSITION WHICH COMPRISES POLYOXYMETHYLENE HAVING A NUMBER AVERAGE MOLECULAR WEIGHT GREATER THAN 10,000 AND HAVING INCORPORATED THEREIN 1 TO 20% BY WEIGHT OF GLYCERIN BASED UPON THE COMBINED WEIGHT OF SAID GLYCERIN AND SAID POLYOXMETHYLENE.
Claim 2
Dependent Claim
36 words
THE COMPOSITION WHICH COMPRISES POLYOXYMETHYLENE HAVING A NUMBER AVERAGE MOLECULAR WEIGHT GREATER THAN 10,000 AND HAVING INCORPORATED THEREIN 1 TO 20% BY WEIGHT OF GLYCERIN BASED UPON THE COMBINED WEIGHT OF SAID GLYCERIN AND SAID POLYOXMETHYLENE.
References Cited (Backward Citations)
US2121844A
Cited
US2247764A
Cited
US2296249A
Cited
US2399456A
Cited
GB753299A
Cited
US3020264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |