US3847743A
Expired / Lapsed
US
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Enzymes bound to carbonyl polymers
Assignee: Wyeth Holdings LLC
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Filing: 1973-01-12
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Granted: 1974-11-12
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Expires: 1993-01-12
Abstract
Abstract Enzymes are covalently bound to sulfited aldehyde or ketone polymers cross-linked with dialdehydes.
Inventors
- 👤 P Forgione
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:34
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/28; C12; C12N; C12N11/00; C12N11/02; C12N11/08; C12N11/082; C12N11/087; C12N11/089; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F2810/00; C08F2810/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
29 words
A CROSS-LINKED POLYMER CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF (1) A SULFITED ALDEHYDE OR KETONE POLYMER PRODUCED FROM A VINYL MONOMER AND (2) A DIALDEHYDE HAVING THE FORMULA
Claim 2
Dependent Claim
29 words
A CROSS-LINKED POLYMER CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF (1) A SULFITED ALDEHYDE OR KETONE POLYMER PRODUCED FROM A VINYL MONOMER AND (2) A DIALDEHYDE HAVING THE FORMULA
Claim 3
Dependent Claim
10 words
A composition according to claim 1 wherein x is 3.
Claim 4
Dependent Claim
12 words
A composition according to claim 1 wherein said carbonyl polymer is polyacrolein.
Claim 5
Dependent Claim
12 words
A composition according to claim 1 wherein R is a phenylene group.
Claim 6
Dependent Claim
14 words
A composition according to claim 1 wherein said carbonyl polymer is a polyacrolein-bisulfite adduct.
Claim 7
Independent Claim
26 words
A method which consists essentially of cross-linking (A) a sulfited aldehyde or ketone polymer produced from a vinyl monomer with (B) a dialdehyde having the formula
Claim 8
Independent Claim
26 words
A method which consists essentially of cross-linking (A) a sulfited aldehyde or ketone polymer produced from a vinyl monomer with (B) a dialdehyde having the formula
Claim 9
Dependent Claim
10 words
A method according to claim 6 wherein x is 3.
Claim 10
Dependent Claim
12 words
A method according to claim 6 wherein said carbonyl polymer is polyacrolein.
Claim 11
Dependent Claim
14 words
A method according to claim 6 wherein said carbonyl polymer is a polyacrolein-bisulfite adduct.
Claim 12
Dependent Claim
12 words
A method according to claim 6 wherein R is a phenylene group.
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |