US3639376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefin crystallization additives
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1968-07-24
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Granted: 1972-02-01
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Expires: 1988-07-24
Abstract
Abstract THE RATE AND TEMPERATURE OF CRYSTALLIZATION OF CRYSTALLIZABLE POLYOLEFINS IS INCREASED BY INCLUDING THEREIN NUCLEATING AMOUNTS OF ESTERS, POLYESTERS HAVING MOLECULAR WEIGHTS OF UP TO THE ORDER OF 2000, OR MIXTURES THEREOF, ALL STRUCTURALLY DERIVED FROM CERTAIN MONO-, DI-, AND TRI-HYDRIC ALCOHOLS AND POLYCARBOXYLIC ACIDS HAVING TWO CARBOXYL GROUPS SEPARATED BY A CHAIN OF LESS THAN 6 CARBON ATOMS.
Inventors
- 👤 William G De Pierri Jr
- 👤 Hulen L Wilder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:19
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/04; C08K5/10; C08K5/11; C08L; C08L23/00; C08L23/02
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |