US2986580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mesityl oxide copolymers
Assignee: Shell USA Inc
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Filing: 1958-04-25
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Granted: 1961-05-30
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Expires: 1978-04-25
Abstract
No abstract record available.
Inventors
- 👤 Paul A Devlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:32
CPC Classifications
C; C08; C08F; C08F16/00; C08F16/36; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
32 words
A COMPOSITION OF MATTER COMPRISING THE COPOLYMER OF MESITYL OXIDE AND BUTADIENE HAVING A MOLECULAR WEIGHT FROM 700 TO 5000 AND CONTAINING FROM ABOUT 2 TO ABOUT 35% OF COMBINED MESITYL OXIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |