US3335189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of polyether-thioethers
Assignee: Bayer AG
•
Filing: 1964-04-27
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Granted: 1967-08-08
•
Expires: 1984-04-27
Abstract
No abstract record available.
Inventors
- 👤 Degener Eberhart
- 👤 Schmelzer Hans-Georg
- 👤 Holtschmidt Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:46
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/252; C; C07; C07C; C07C323/00; C08; C08G; C08G65/00; C08G65/34; C08G75/00; C08G75/02; C08G75/0204; C08G75/0245; C08G75/12; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372; C10; C10M; C10M3/00; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/02; C10M2207/023; C10M2215/00; C10M2215/02; C10M2215/06; C10M2221/00; C10M2221/04; C10M2221/043; C10N; C10N2040/00; C10N2040/02; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/08; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/20; C10N2040/22; C10N2040/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
IN THE PROCESS OF PRODUCING A POLYETHER-THIOETHER HAVING THE FORMULA:
Claim 2
Dependent Claim
10 words
IN THE PROCESS OF PRODUCING A POLYETHER-THIOETHER HAVING THE FORMULA:
References Cited (Backward Citations)
US3135804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |