US2495260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-arylbenzothiazolium quaternary salts and process for preparing the same
Assignee: Individual
•
Filing: 1944-04-25
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Granted: 1950-01-24
•
Expires: 1964-04-25
Abstract
No abstract record available.
Inventors
- 👤 Jennen Jacob Josef
- 👤 Michaelis Hella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:11
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/02; C07D277/20; C07D277/22; C07D277/60; C07D277/62; C07D277/64
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
42 words
A PROCESS FOR PREPARING A CYCLAMMONIUM QUATERNARY SALT COMPRISING OXIDIZING, WITH A HALOGEN, AN N,N-DIARYLTHIOAMIDE IN WHICH THE ARYL GROUPS CONTAIN A HYDROGEN ATOM ATTACHED TO THE ARYL NUCLEUS IN AT LEAST ONE OF THE POSITIONS ORTHO TO THE AMIDE NITROGEN ATOM.
Claim 2
Dependent Claim
42 words
A PROCESS FOR PREPARING A CYCLAMMONIUM QUATERNARY SALT COMPRISING OXIDIZING, WITH A HALOGEN, AN N,N-DIARYLTHIOAMIDE IN WHICH THE ARYL GROUPS CONTAIN A HYDROGEN ATOM ATTACHED TO THE ARYL NUCLEUS IN AT LEAST ONE OF THE POSITIONS ORTHO TO THE AMIDE NITROGEN ATOM.
Claim 3
Dependent Claim
8 words
A 2-METHYL-3-PHENYLBENZOTHIAZOLIUM QUATERNARY SALT OF THE FOLLOWING FORMULA:
Claim 4
Dependent Claim
8 words
A 2-METHYL-3-PHENYLBENZOTHIAZOLIUM QUATERNARY SALT OF THE FOLLOWING FORMULA:
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) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |