US3928373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,2,3-Triazoles
Assignee: Hoechst AG
•
Filing: 1973-03-15
•
Granted: 1975-12-23
•
Expires: 1993-03-15
Abstract
Abstract 1,2,3-Triazoles are obtained by reacting an alkenyl sulfine with a salt of hydrazoic acid. The products are fluorescent agents and useful as UV-absorbers, scintillators or optical brighteners or starting materials for such materials.
Inventors
- 👤 Gerhard Beck
- 👤 Dieter Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:19
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/52; C07D263/54; C07D263/56; C07D249/00; C07D249/02; C07D249/04; C07D249/06; C07D263/60; C07D271/00; C07D271/02; C07D271/10; C07D309/00; C07D309/16; C07D309/28; C07D309/30; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/24
Claims Analysis
Total Claims: 6
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
15 words
A compound as claimed in claim 1, wherein X is a group of the formula
Claim 4
Dependent Claim
20 words
A compound as claimed in claim 1 in which n is 1 and X is a group of the formula
Claim 5
Dependent Claim
23 words
A compound as claimed in claim 1 in which n is 1, R is lower carboalkoxyphenyl, X is a group of the formula
Claim 6
Dependent Claim
25 words
The compound as claimed in claim 4 in which R is p-carbomethoxyphenyl, and R1 and R2 each are methyl in the 5 and 6 positions.
References Cited (Backward Citations)
US3470196A
Cited
US3686202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |