US4201857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel condensation products having high activity to insolubilize proteins and protein-insolubilized products
Assignee: Givaudan Roure Corp
•
Filing: 1975-08-19
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Granted: 1980-05-06
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Expires: 1995-08-19
Abstract
Abstract The novel condensation product of 1,3-phenylenediamine and glutardialdehyde has high activity to fix or insolubilize proteins, including enzymes.
Inventors
- 👤 Victor Krasnobajew
- 👤 Regula Boeniger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:07
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/06; C08G12/08; C08G12/40; C08L; C08L61/00; C08L61/20; C08L61/22; C12; C12N; C12N11/00; C12N11/02; C12N11/08; C12N11/089; C12N11/091; Y; Y10; Y10S; Y10S435/00; Y10S435/814
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
32 words
A process for the preparation of a condensation product, which process comprises reacting 1,3-phenylene-diamine with glutardialdehyde to form a product insoluble in water and inert, water-immiscible organic solvents, and diazotizing said product.
Claim 2
Dependent Claim
32 words
A process for the preparation of a condensation product, which process comprises reacting 1,3-phenylene-diamine with glutardialdehyde to form a product insoluble in water and inert, water-immiscible organic solvents, and diazotizing said product.
Claim 3
Dependent Claim
9 words
The diazotized product obtained in accordance with claim 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |