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Patent US2987515A successfully refreshed from Google Patents.
US2987515A
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Urethanes
Assignee: Baker Petrolite LLC
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Filing: 1958-02-03
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Granted: 1961-06-06
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Expires: 1978-02-03
Abstract
No abstract record available.
Inventors
- 👤 Verner L Stromberg
- 👤 William B Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:22
CPC Classifications
A; A61; A61Q; A61Q15/00; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/494; A61K8/4946; A61Q17/00; A61Q17/04; A61Q5/00; C; C04; C04B; C04B24/00; C04B24/12; C07; C07D; C07D233/00; C07D233/04; C07D233/06; C07D233/08; C07D233/12; C07D233/14; C07D239/00; C07D239/02; C07D239/06; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C11; C11D; C11D3/00; C11D3/16; C11D3/26; C11D3/28; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149; C10L1/232; C10L1/234; C10L1/238; C10L1/2383; C10L1/2387; Y; Y10; Y10S; Y10S507/00; Y10S507/939; Y10S516/00; Y10S516/01; Y10S516/07; Y10S585/00; Y10S585/949; Y10S585/95
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 4
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 5
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 6
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
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) | 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 |