US3553176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for modifying polyolefins
Assignee: Asahi Kasei Corp
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Filing: 1967-08-22
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Granted: 1971-01-05
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Expires: 1987-08-22
Abstract
Abstract PROCESS FOR MODIFYING POLYOLEFINS WHICH COMPRISES REACTING POLYOLEFINS WITH AT LEAST A MODIFIER SELECTED FROM THE GROUP CONSISTING OF SULFUR, PARAQUINONE DIOXIME AND ESTERS THEREOF, MALEIMIDE AND DERIVATIVES THEREOF, HALOGENATED BENZOQUINONES, AND UNSATURATED CARBOXYLIC ACID AND DERIVATIVES THEREOF, AND, IF REQUIRED, INORGANIC ADDITIVE BY HEATING THEM IN THE PRESENCE OF A TETRAVALENT ORGANOTIN COMPOUND.
Inventors
- 👤 Yoshisato Fujisaki
- 👤 Itsuho Aishima
- 👤 Hisaya Sakurai
- 👤 Atsushi Kitaoka
- 👤 Hironobu Kawasaki
- 👤 Minoru Oshima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:03
CPC Classifications
C; C08; C08F; C08F8/00; C08K; C08K5/00; C08K5/56; C08K5/57
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |