Patent US3135720A successfully refreshed from Google Patents.
US3135720A
Expired / Lapsed
US
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New polymerization products containing epoxy groups
Assignee: BASF Schweiz AG
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Filing: 1961-05-29
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Granted: 1964-06-02
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Expires: 1981-05-29
Abstract
No abstract record available.
Inventors
- 👤 Batzer Hans
- 👤 Maeder Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:45
CPC Classifications
C; C07; C07D; C07D319/00; C07D319/04; C07D319/08; C07D493/00; C07D493/02; C07D493/10; C08; C08F; C08F20/00; C08F20/62; C08F24/00; C09; C09D; C09D137/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
12 words
A POLYMERIZATION PRODUCT WHICH CONTAINS COPOLYMERIZED (1) A MONOEPOXIDE OF THE FORMULA
References Cited (Backward Citations)
US2999866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |