US3730841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encapsulated carrier bound enzymes
Assignee: Wyeth Holdings LLC
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Filing: 1971-03-24
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Granted: 1973-05-01
•
Expires: 1991-03-24
Abstract
Abstract Enzymes bound to carriers can be maintained active and the channelling and compacting of the bound enzyme can be substantially reduced by encapsulating the bound enzyme in a coating through which the substrate and its conversion product are permeable.
Inventors
- 👤 P Salvatore
- 👤 R Polistina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:17
CPC Classifications
B; B01; B01J; B01J33/00; C; C12; C12N; C12N11/00; C12N11/02; C12N11/04; B01J35/00; B01J35/70
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
13 words
An article according to claim 1 wherein said carrier is a carbonyl polymer.
Claim 2
Dependent Claim
13 words
An article according to claim 1 wherein said carrier is an aldehyde polymer.
Claim 3
Dependent Claim
13 words
An article according to claim 1 wherein said carrier is an acrolein polymer.
Claim 4
Dependent Claim
11 words
An article according to claim 1 wherein said enzyme is invertase.
Claim 5
Dependent Claim
13 words
An article according to claim 1 wherein said coating is an acrylamide polymer.
Claim 6
Dependent Claim
13 words
An article according to claim 1 wherein said coating is a polyamide resin.
Claim 7
Dependent Claim
12 words
An article according to claim 1 wherein said enzyme is glucose isomerase.
Claim 8
Dependent Claim
16 words
An article according to claim 1 wherein said coating is an acrylamide-methylenebisacrylamide copolymer modified with styrene.
Claim 9
Dependent Claim
16 words
An article according to claim 9 wherein said enzyme is invertase and said carrier is polyacrolein.
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |