US3575950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing polyethylene having improved film forming properties
Assignee: Eastman Kodak Co
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Filing: 1968-09-26
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Granted: 1971-04-20
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Expires: 1988-09-26
Abstract
Abstract A THREE-STAGE PROCESS FOR PREPARING POLYETHYLENE EMPLOYING AT LEAST ONE PEROXIDE CATALYST IN EACH STAGE. THE PROCESS PRODUCES A NOVEL POLYETHYLENE HAVING A DENSITY OF ABOUT 0.922 TO ABOUT 0.932 WHICH FINDS PARTICULAR UTILITY IN FORMING POLYETHYLENE FILMS HAVING IMPROVED OPTICAL PROPERTIES.
Inventors
- 👤 Willard P Gleason
- 👤 Jesse R Goza Jr
- 👤 Jerald G Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:36
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J3/00; B01J3/04; C; C08; C08F; C08F10/00; B01J2219/00; B01J2219/18; B01J2219/185; B01J2219/19; B01J2219/194; B01J2219/1941; B01J2219/1943
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |