US3205270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of 2, 2'-biphenol
Assignee: United States Steel Corp
•
Filing: 1961-06-22
•
Granted: 1965-09-07
•
Expires: 1981-06-22
Abstract
No abstract record available.
Inventors
- 👤 John J Jaruzelski
- 👤 Kolobielski Marjan
- 👤 Chester S Sheppard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:58
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOSITION OF MATTER, THE COMPOUND:
Claim 2
Dependent Claim
6 words
A COMPOSITION OF MATTER, THE COMPOUND:
References Cited (Backward Citations)
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US2140824A
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US2227805A
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US2267756A
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US2578688A
Cited
US2666039A
Cited
US2873200A
Cited
US2945871A
Cited
US2956977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |