US3634218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the radiation grafting of butadiene and other co-graft monomers onto polyolefin substrates
Assignee: Japan Atomic Energy Agency
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Filing: 1967-10-31
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Granted: 1972-01-11
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Expires: 1987-10-31
Abstract
Abstract A PROCESS IN WHICH A POLYOLEFIN IS BROUGHT INTO CONTACT WITH BUTADIENE AND STYRENE AND/OR ACRYLONITRILE IN THE GASEOUS OR LIQUID PHASE, EITHER DURING OR SUBSEQUENT TO IRRADIATION OF THE POLYOLEFIN WITH AN IONIZING RADIATION WHEREBY GRAFT POLYMERIZATION OF THE BUTADIENE AND COGRAFT MONOMER IS EFFECTED ONTO THE POLYOLEFIN.
Inventors
- 👤 Masao Gotohda
- 👤 Kunio Araki
- 👤 Shigeoshi Imamura
- 👤 Sadami Shibabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:56
CPC Classifications
C; C08; C08F; C08F255/00
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |