Patent DE501252C successfully refreshed from Google Patents.
US3255134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fatty acid anhydrides as slip and antiblocking agents for polyolefins
Assignee: VICTOR WOLF Ltd
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Filing: 1962-03-20
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Granted: 1966-06-07
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Expires: 1982-03-20
Abstract
No abstract record available.
Inventors
- 👤 Rowe Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:26
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
A MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE, POLYEHTYLENE, POLYVINYLIDENE CHLORIDE AND CELLULOSE ACETATE, SAID MATERIAL HAVING INCORPORATED THEREIN AN ANHYDRIDE OF AN ALIPHATIC MONOCARBOXYLIC ACID CONTAINING CHAINS OF FROM 12 TO 18 CARBON ATOMS AS A SLIP AGENT AND ANTI-BLOCKING AGENT, SAID ANHYDRIDE BEING INCORPORATED IN AN AMOUNT OF FROM ONE HALF TO FIVE PARTS BY WEIGHT PER HUNDRED PARTS BY WEIGHT OF SAID MATERIAL.
References Cited (Backward Citations)
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GB610138A
Cited
US2449489A
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Cited
US2613156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |