US2894013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing aliphatic isothiocyanates
Assignee: Bayer Pharma AG
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Filing: 1958-02-24
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Granted: 1959-07-07
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Expires: 1978-02-24
Abstract
No abstract record available.
Inventors
- 👤 Werres Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
C; C07; C07C; C07C331/00; C07C331/16; C07C331/18; C07C331/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
METHOD FOR PREPARATION OF LOWER ALIPHATIC ISOTHIOCYANATES WHICH COMPRISES REACTING A SOLUBLE SALT OF AN N-ALKYLDITHIOCARBAMIC ACID WITH PHOSGENE IN AN AQUEOUS MEDIUM WHEREIN ALKYL IS LOWER ALKYL.
Claim 2
Dependent Claim
28 words
METHOD FOR PREPARATION OF LOWER ALIPHATIC ISOTHIOCYANATES WHICH COMPRISES REACTING A SOLUBLE SALT OF AN N-ALKYLDITHIOCARBAMIC ACID WITH PHOSGENE IN AN AQUEOUS MEDIUM WHEREIN ALKYL IS LOWER ALKYL.
References Cited (Backward Citations)
GB678125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |