Patent US2727922A successfully refreshed from Google Patents.
US2727922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halo-formamidine salts and method of preparation
Assignee: Wyeth Holdings LLC
•
Filing: 1953-03-25
•
Granted: 1955-12-20
•
Expires: 1973-03-25
Abstract
No abstract record available.
Inventors
- 👤 Hans Z Lecher
- 👤 Clement L Kosloski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:14
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/70
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
A NEW PRODUCT OF THE FORMULA:
Claim 2
Dependent Claim
6 words
A NEW PRODUCT OF THE FORMULA:
Claim 3
Independent Claim
34 words
THE METHOD OF PREPARING HALO-FORMAMIDINE HYDRONITRATES WHICH COMPRISES TREATING A SOLUTION OF A HALOFORMAMIDINE HYDROHALIDE SELECTED FROM THE GROUP CONSISTING OF CHLORO-FORMAMIDINE HYDROCHLORIDE AND BROMOSISTING OF CHLORO-FORMAMIDINE HYDROCHLORIDE AND BROMOFORMAMIDINE HYDROBROMIDE WITH NITRIC ACID.
Claim 4
Independent Claim
34 words
THE METHOD OF PREPARING HALO-FORMAMIDINE HYDRONITRATES WHICH COMPRISES TREATING A SOLUTION OF A HALOFORMAMIDINE HYDROHALIDE SELECTED FROM THE GROUP CONSISTING OF CHLORO-FORMAMIDINE HYDROCHLORIDE AND BROMOSISTING OF CHLORO-FORMAMIDINE HYDROCHLORIDE AND BROMOFORMAMIDINE HYDROBROMIDE WITH NITRIC ACID.
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) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |