Patent US4482630A successfully refreshed from Google Patents.
US4482630A
Expired / Lapsed
US
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Siliconate-coated enzyme
Assignee: Colgate Palmolive Co
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Filing: 1983-11-21
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Granted: 1984-11-13
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Expires: 2003-11-21
Abstract
Abstract Enzyme particles are coated or at least partially coated with a salt of a lower alkyl siliconic acid and/or polymerization product(s) thereof which may be formed from such acid on storage. The coated enzyme particles are useful as components of heavy duty fabric softening laundry detergent compositions, such as those which contain bentonite to soften laundry. The coating material, which may be more simply referred to as the siliconate, assists in stabilizing the enzyme when such is incorporated in detergent compositions, helps to prevent adherence of the coated particles to container or compartment walls and can aid in controlling the foaming activity of the built synthetic organic detergents.
Inventors
- 👤 Edwin Allen
- 👤 Alan Dillarstone
- 👤 Joseph A. Reul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:21
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/0039; C11D3/00; C11D3/16; C11D3/162; C11D3/37; C11D3/3703; C11D3/373; C11D3/38; C11D3/386; C11D3/38672
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
37 words
Particles of enzyme of sizes in the range of No's. 10 to 200, U.S. Sieve Series, at least partially coated with a salt of a lower alkyl siliconic acid and/or polymerization product(s) thereof formed therefrom on storage.
Claim 2
Dependent Claim
37 words
Particles of enzyme of sizes in the range of No's. 10 to 200, U.S. Sieve Series, at least partially coated with a salt of a lower alkyl siliconic acid and/or polymerization product(s) thereof formed therefrom on storage.
Claim 3
Dependent Claim
18 words
Enzyme particles according to claim 1 which are coated with from 0.05 to 1% of potassium methyl siliconate.
References Cited (Backward Citations)
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US3915882A
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US3966629A
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US4264465A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-13 | 1988-05-14 | 1988-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-13 | 1992-05-14 | 1992-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-13 | 1996-05-14 | 1996-11-13 | $7700.00 | Window Closed / Lapsed |