US2835710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetrols containing an uninterrupted eight carbon chain with hydroxyl groups in the 1, 4, 5 and 8-positions
Assignee: EIDP Inc
•
Filing: 1955-11-25
•
Granted: 1958-05-20
•
Expires: 1975-11-25
Abstract
No abstract record available.
Inventors
- 👤 Howard E Holmquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:12
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/18; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A TETROL CONTAINING AN UNINTERRUPTED EIGHT CARBON CHAIN REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
12 words
A TETROL CONTAINING AN UNINTERRUPTED EIGHT CARBON CHAIN REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
US2097493A
Cited
US2285448A
Cited
US2440929A
Cited
US2473406A
Cited
US2657220A
Cited
US2704771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |