Patent US3798187A successfully refreshed from Google Patents.
US3798187A
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US
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Photo-degradable styrene type resin compositions
Assignee: Sekisui Chemical Co Ltd
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Filing: 1971-06-22
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Granted: 1974-03-19
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Expires: 1991-06-22
Abstract
Abstract PHOTO-DEGRADABLE STYRENE TYPE RESIN COMPOSITIONS FORMED BY ADDITION OF AT LEAST ONE HALOGENATED POLYSTYRENE, IN WHICH AT LEAST A PORTION OF THE HYDROGEN ATOMS LINKED WITH THE CARBON ATOMS IN THE MAIN CHAIN OF THE POLYMER ARE SUBSTITUTED WITH HALOGEN ATOMS, IN AN AMOUNT SUFFICIENT TO EXHIBIT PHOTO-DEGRADATION-PROMOTING ACTION, TO A STYRENE TYPE RESIN.
Inventors
- 👤 H Miyoshi
- 👤 T Shinohara
- 👤 H Tateishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:48
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08L; C08L25/00; C08L25/02; C08L25/04; C08L55/00; C08L55/02; C08J2325/00; C08J2425/00; C08L25/18; Y; Y10; Y10S; Y10S260/00; Y10S260/43; Y10S521/00; Y10S521/916
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |