US2495305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of pentaerythritol dehydration products
Assignee: Trojan Powder Co
•
Filing: 1946-07-10
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Granted: 1950-01-24
•
Expires: 1966-07-10
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Wyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:58
CPC Classifications
C; C07; C07D; C07D305/00; C07D305/02; C08; C08G; C08G61/00; C08G61/12; Y; Y10; Y10S; Y10S260/00; Y10S260/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
20 words
THE ESTERS OF DRYING OIL FATTY ACIDS WITH THE DEHYDRATION PRODUCT OF PENTAERYTHRITOL OF COMPOSITION REPRESENTED BY THE TYPE 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) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |