US2603655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butadiene-alkylbenzene-olefin condensation products and method for their production
Assignee: EIDP Inc
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Filing: 1949-09-20
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Granted: 1952-07-15
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Expires: 1969-09-20
Abstract
No abstract record available.
Inventors
- 👤 Daniel E Strain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:26
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
24 words
A COPOLYMER OF METHYLMETHACRYLATE ANDA 1,3-BUTADIENE-XYLENE CONDENSATION PRODUCT, THE CONDENSATION PRODUCT HAVING BEEN PREPARED BY HEATING 1,3-BUTADIENE WITH XYLENE IN THE PRESENCE OF SODIUM.
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) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |