Patent US2845449A successfully refreshed from Google Patents.
US2845449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thioamide production
Assignee: California Research LLC
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Filing: 1956-07-11
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Granted: 1958-07-29
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Expires: 1976-07-11
Abstract
No abstract record available.
Inventors
- 👤 William G Toland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:39
CPC Classifications
C; C07; C07C; C07C253/00; C07C327/00; C07C327/38; C07C327/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN A PROCESS FOR REACTING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS AND PARTIALLY OXIDIZED HYDROCARBONS WITH ELEMENTAL SULFUR AND ANHYDROUS AMMONIA, THE IMPROVEMENT WHICH COMPRISES HEATING THE ORGANIC COMPOUND AND AMMONIA TO A TEMPERATURE ABOVE 400*F. IN THE ABSENCE OF ELEMENTAL SULFUR AND THEN INTIMATELY CONTACTING THE HEATED MATERIALS WITH ELEMENTAL SULFUR.
Claim 2
Dependent Claim
55 words
IN A PROCESS FOR REACTING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS AND PARTIALLY OXIDIZED HYDROCARBONS WITH ELEMENTAL SULFUR AND ANHYDROUS AMMONIA, THE IMPROVEMENT WHICH COMPRISES HEATING THE ORGANIC COMPOUND AND AMMONIA TO A TEMPERATURE ABOVE 400*F. IN THE ABSENCE OF ELEMENTAL SULFUR AND THEN INTIMATELY CONTACTING THE HEATED MATERIALS WITH ELEMENTAL SULFUR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |