US2434510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condesation of olefinic compounds with hydrogen sulphide
Assignee: Sharples Chemicals Inc
•
Filing: 1943-01-20
•
Granted: 1948-01-13
•
Expires: 1963-01-20
Abstract
No abstract record available.
Inventors
- 👤 John F Olin
- 👤 John L Eaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:23
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/02; C07C319/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1836170A
Cited
FR667308A
Cited
US2101096A
Cited
FR801762A
Cited
US2052268A
Cited
US2296399A
Cited
US2366453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-12 | 1951-07-14 | 1952-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-12 | 1955-07-14 | 1956-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-12 | 1959-07-14 | 1960-01-13 | $7700.00 | Window Closed / Lapsed |