Patent US952297A successfully refreshed from Google Patents.
US2986576A
Expired / Lapsed
US
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Long chain alkylbenzene diisocyanates
Assignee: Atlantic Richfield Co
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Filing: 1958-02-06
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Granted: 1961-05-30
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Expires: 1978-02-06
Abstract
No abstract record available.
Inventors
- 👤 Giovanni A Bonetti
- 👤 Vincent J Keenan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:53
CPC Classifications
C; C07; C07C; C07C265/00; C07C265/12; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7614
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
ALKYLBENZENE DIISOCYANATES OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
6 words
ALKYLBENZENE DIISOCYANATES OF THE GENERAL FORMULA:
References Cited (Backward Citations)
GB483308A
Cited
US2680730A
Cited
US2671082A
Cited
US2683144A
Cited
US2680130A
Cited
US2757185A
Cited
US2904535A
Cited
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 |