US2866776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making polysulfide liquid polymers
Assignee: Dow Chemical Co
•
Filing: 1956-04-04
•
Granted: 1958-12-30
•
Expires: 1976-04-04
Abstract
No abstract record available.
Inventors
- 👤 William R Nummy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:31
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PROCESS FOR MAKING A POLYSULFIDE LIQUID POLYMER CONTAINING REACTIVE MERCAPTO GROUPS, WHICH PROCESS COMPRISES OXIDIZING A DI(2-MERCAPTOETHYL)ETHER OF A DIOL, WHICH ETHER HAS THE GENERAL FORMULA
Claim 2
Dependent Claim
27 words
A PROCESS FOR MAKING A POLYSULFIDE LIQUID POLYMER CONTAINING REACTIVE MERCAPTO GROUPS, WHICH PROCESS COMPRISES OXIDIZING A DI(2-MERCAPTOETHYL)ETHER OF A DIOL, WHICH ETHER HAS THE GENERAL FORMULA
References Cited (Backward Citations)
GB464356A
Cited
US2584264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |