US2916519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of thioether glycols
Assignee: Bayer Corp
•
Filing: 1957-05-29
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Granted: 1959-12-08
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Expires: 1977-05-29
Abstract
No abstract record available.
Inventors
- 👤 Wegner Christian
- 👤 Holtschmidt Hans
- 👤 Hess Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:28
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07C; C07C319/00; C07C319/14; C10M2221/00; C10M2221/04; C10M2221/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
PROCESS FOR THE PRODUCTION OF A MIXTURE CONTAINING THIODIGLYCOL, TRIETHYLENE DITHIOGLYCOL, TETRAETHYLENE TRITHIOGLYCOL AND HIGHER HOMOLOGUES THEREOF WHICH COMPRISES CONTACTING THIODIGLYCOL IN A PACKED COLUMN WITH A MIXTURE CONTAINING ABOUT 2 MOLS OF ETHYLENE ODIDE, 0.1 TO 1 MOL OF A MEMBER SELECTED FFROM THE GROUP CONSISTING OF CARBON DISULFIDE, CARBON OXYSULFIDE, AND EXCESS HYDROGEN SULFIDE.
Claim 2
Dependent Claim
56 words
PROCESS FOR THE PRODUCTION OF A MIXTURE CONTAINING THIODIGLYCOL, TRIETHYLENE DITHIOGLYCOL, TETRAETHYLENE TRITHIOGLYCOL AND HIGHER HOMOLOGUES THEREOF WHICH COMPRISES CONTACTING THIODIGLYCOL IN A PACKED COLUMN WITH A MIXTURE CONTAINING ABOUT 2 MOLS OF ETHYLENE ODIDE, 0.1 TO 1 MOL OF A MEMBER SELECTED FFROM THE GROUP CONSISTING OF CARBON DISULFIDE, CARBON OXYSULFIDE, AND EXCESS HYDROGEN SULFIDE.
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) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |