US2987508A
Expired / Lapsed
US
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Method of thermally cross-linking an alkylvinylaromatic hydrocarbon polymer
Assignee: Dow Chemical Co
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Filing: 1957-03-11
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Granted: 1961-06-06
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Expires: 1977-03-11
Abstract
No abstract record available.
Inventors
- 👤 Norman R Ruffing
- 👤 James L Amos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:09
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/24; C08J3/247; C08J2325/00; C08J2325/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A METHOD FOR THERMALLY CROSS-LINKING A THERMOPLASTIC POLYMER OF THE GROUP CONSISTING OF HOMOPOLYMERS OF
Claim 2
Independent Claim
15 words
A METHOD FOR THERMALLY CROSS-LINKING A THERMOPLASTIC POLYMER OF THE GROUP CONSISTING OF HOMOPOLYMERS OF
References Cited (Backward Citations)
GB443405A
Cited
US2475002A
Cited
US2594579A
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US2638465A
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US2738894A
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US2811514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |