US2863926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mono-adducts of ethylene oxide and acetylenic glycols
Assignee: Airco Inc
•
Filing: 1955-02-21
•
Granted: 1958-12-09
•
Expires: 1975-02-21
Abstract
No abstract record available.
Inventors
- 👤 Gilbert B Carpenter
- 👤 Morton W Leeds
- 👤 Gister Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:14
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/675; C08G18/679
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
2,5-DIMETHYL-2,5-DI(2''-HYDROXYETHOXY)-3-HEXYNE.
Claim 2
Dependent Claim
1 words
2,5-DIMETHYL-2,5-DI(2''-HYDROXYETHOXY)-3-HEXYNE.
References Cited (Backward Citations)
US2053708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |