US3764478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized enzymatic test reagents
Assignee: Roche Diagnostics GmbH
•
Filing: 1970-06-09
•
Granted: 1973-10-09
•
Expires: 1990-06-09
Abstract
Abstract ENZYMATIC TEST REAGENTS CONTAINING NICOTINAMIDEADENINE-DINUCLEOTIDE AND/OR NICTINAMIDE-ADENINE DINUCLEOTIDE PHOSPHATE, IN REDUCED OR OXIDIZED FORM, OR PURINE OR PYRIMIDINE NUCLEOTIDES, ARE STABILIZED BY INCORPORATING THEREIN EFFECTIVE AMOUNTS OF POLYVINYL-PYRROLIDONE.
Inventors
- 👤 H Bergmeyer
- 👤 U Bavaria
- 👤 E Bernt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:06
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/008; C12Q1/26; C12Q1/48; C12Q1/54; Y; Y10; Y10T; Y10T436/00; Y10T436/10; Y10T436/108331
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |