Patent US3598776A successfully refreshed from Google Patents.
US3598776A
Expired / Lapsed
US
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Blends of disproportionated rosin,a stabilizer,and a thermoplastic polymeric material
Assignee: WR Grace and Co
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Filing: 1965-06-28
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Granted: 1971-08-10
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Expires: 1985-06-28
Abstract
Abstract ADDITION OF A DISPROPORTIONATED ROSIN TO POLYPROPYLENE MAKES IT POSSIBLE TO INCLUDE ADDITIONAL AMOUNTS OF DILAURYL THIODIPROPIONATE STABILIZER IN THE POLYMER WITHOUT STABILIZER BLOOM.
Inventors
- 👤 Henry G Schirmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:58
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08K; C08K3/00; C08K3/34; C08K3/36; C08K5/00; C08K5/04; C08K5/10; C08L23/04; C08L23/06; C08L23/10; C08L93/00; C08L93/04
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |