US2978430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polypropylene compositions
Assignee: Sunoco Inc
•
Filing: 1957-07-05
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Granted: 1961-04-04
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Expires: 1977-07-05
Abstract
No abstract record available.
Inventors
- 👤 William E Thompson
- 👤 Daniel R Mullin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:00
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/01; C08K5/04; C08K5/10; C08K5/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A NEW COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF CRYSTALLINE POLYPROPYLENE AND FROM 7% TO 25% BY WEIGHT OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF A NAPHTHALENE HAVING AN ALKYL SUBSTITUENT IN THE BETA POSITION, SAID SUBSTITUENT HAVING FROM 1 TO 5 CARBON ATOMS, DECAHYDRONAPHTHALENE, METHYL BETA-NAPHTHYL KETONE, AND ACETYL TRIBUTYL CITRATE.
Claim 2
Dependent Claim
53 words
A NEW COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF CRYSTALLINE POLYPROPYLENE AND FROM 7% TO 25% BY WEIGHT OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF A NAPHTHALENE HAVING AN ALKYL SUBSTITUENT IN THE BETA POSITION, SAID SUBSTITUENT HAVING FROM 1 TO 5 CARBON ATOMS, DECAHYDRONAPHTHALENE, METHYL BETA-NAPHTHYL KETONE, AND ACETYL TRIBUTYL CITRATE.
References Cited (Backward Citations)
US2307037A
Cited
US2477717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |