US2962508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetramethyloltetrahydropyran and process of preparation
Assignee: Hercules Powder Co
•
Filing: 1959-12-21
•
Granted: 1960-11-29
•
Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Prosser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:12
CPC Classifications
C; C07; C07D; C07D309/00; C07D309/02; C07D309/04; C07D309/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
TETRAHYDRO - 3,3,5,5 - TETRAKIS(HYDROXYMETHYL)PYRAN.
Claim 2
Dependent Claim
5 words
TETRAHYDRO - 3,3,5,5 - TETRAKIS(HYDROXYMETHYL)PYRAN.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |