Patent US2982790A successfully refreshed from Google Patents.
US2982790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for their preparation
Assignee: —
•
Filing: —
•
Granted: 1961-05-02
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Expires: 1978-05-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:49
CPC Classifications
C; C07; C07C; C07C33/00; C07C33/02; C07C33/025; C07C33/035; C07C29/00; C07C29/132; C07C29/136; C07C29/14; C07C29/141; C07C29/36; C07C29/38; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/74; C07C45/75; C07C47/00; C07C47/02; C07C47/19; C07C47/20; C07C47/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A PROCESS FOR PREPARING TERMINALLY UNSATURATED POLYOLS HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
11 words
A PROCESS FOR PREPARING TERMINALLY UNSATURATED POLYOLS HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US2292926A
Cited
US2418290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |