US3841970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immobilized enzymes
Assignee: Gulf Research and Development Co
•
Filing: 1972-12-19
•
Granted: 1974-10-15
•
Expires: 1992-12-19
Abstract
Abstract 1. A METHOD FOR THE PREPARATION OF AN IMMOBILIZED ENZYME WHICH COMPRISES REACTING AN AQUEOUS SOLUTION OF AN EZYME WITH AN EPOXY CONTAINING POLYMER PREPARED BY THE REACTION OF A SOLID POLYMERIC DIGLYCIDYL ETHER OF BISPHENOL A HAVING AN AVERAGE OF AT LEAST ABOUT ONE REPEATING UNIT WITH A STOICHIOMETRIC EXCESS OF A NITRILE REACTANT SELECTED FROM ACRYLONITRILE AND METHACRYLONITRILE.
Inventors
- 👤 J Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
CPC Classifications
C; C12; C12N; C12N11/00; C12N11/02; C12N11/08; C12N11/089; C12N11/091
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A METHOD FOR THE PREPARATION OF AN IMMOBILIZED ENZYME WHICH COMPRISES REACTING AN AQUEOUS SOLUTION OF AN EZYME WITH AN EPOXY CONTAINING POLYMER PREPARED BY THE REACTION OF A SOLID POLYMERIC DIGLYCIDYL ETHER OF BISPHENOL A HAVING AN AVERAGE OF AT LEAST ABOUT ONE REPEATING UNIT WITH A STOICHIOMETRIC EXCESS OF A NITRILE REACTANT SELECTED FROM ACRYLONITRILE AND METHACRYLONITRILE.
Claim 2
Independent Claim
59 words
A METHOD FOR THE PREPARATION OF AN IMMOBILIZED ENZYME WHICH COMPRISES REACTING AN AQUEOUS SOLUTION OF AN EZYME WITH AN EPOXY CONTAINING POLYMER PREPARED BY THE REACTION OF A SOLID POLYMERIC DIGLYCIDYL ETHER OF BISPHENOL A HAVING AN AVERAGE OF AT LEAST ABOUT ONE REPEATING UNIT WITH A STOICHIOMETRIC EXCESS OF A NITRILE REACTANT SELECTED FROM ACRYLONITRILE AND METHACRYLONITRILE.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |