Patent US3394142A successfully refreshed from Google Patents.
US3394142A
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Substituted tetrazoles and process therefor
Assignee: 3M Co
•
Filing: 1966-01-19
•
Granted: 1968-07-23
•
Expires: 1986-01-19
Abstract
No abstract record available.
Inventors
- 👤 Robert J Koshar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:17
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C07D257/04; C06; C06B; C06B43/00; Y; Y10; Y10S; Y10S149/00; Y10S149/119
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
33 words
THE PROCESS FOR THE PRODUCTION OF SUBSTITUTED TETRAZOLES WHICH COMPRISES REACTING AN AZIDE OF THE GROUP CONSISTING OF SODIUM AZIDE, POTASSIUM AZIDE, AMMONIUM AZIDE, AND ALUMINUM AZIDE AND A NITRILE OF THE FORMULA
Claim 4
Dependent Claim
33 words
THE PROCESS FOR THE PRODUCTION OF SUBSTITUTED TETRAZOLES WHICH COMPRISES REACTING AN AZIDE OF THE GROUP CONSISTING OF SODIUM AZIDE, POTASSIUM AZIDE, AMMONIUM AZIDE, AND ALUMINUM AZIDE AND A NITRILE OF THE FORMULA
References Cited (Backward Citations)
US3038900A
Cited
US3215709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |