US4381247A
Expired / Lapsed
US
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Enzyme-containing bleaching composition
Assignee: KOA SOAP Co Ltd
•
Filing: 1981-10-20
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Granted: 1983-04-26
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Expires: 2001-10-20
Abstract
Abstract An enzyme-containing bleaching composition is disclosed containing an inorganic peroxide, an enzyme, and one or more anhydrous salts selected from the group consisting of anhydrous sodium citrate, anhydrous magnesium sulfate, anhydrous calcium chloride and anhydrous zinc sulfate.
Inventors
- 👤 Yunosuke Nakagawa
- 👤 Shoichiro Aramatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:24
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/38636; C01; C01B; C01B15/00; C01B15/055; C01B15/10; C01B15/106; C11D3/38609; C11D3/38672; D; D06; D06L; D06L4/00; D06L4/10; D06L4/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
82 words
A dry, powder, enzyme-containing, bleaching composition comprising from 5 to 98 percent by weight of an inorganic peroxide effective for bleaching fabrics; from 0.01 to 5 percent by weight of one or more enzymes capable of functioning in a bleaching composition for the removal of organic stains from fabrics; and from 0.1 to 20 percent by weight of at least one anhydrous salt selected from the group consisting of anhydrous sodium citrate, anhydrous magnesium sulfate, anhydrous calcium chloride and anhydrous zinc sulfate.
Claim 2
Dependent Claim
82 words
A dry, powder, enzyme-containing, bleaching composition comprising from 5 to 98 percent by weight of an inorganic peroxide effective for bleaching fabrics; from 0.01 to 5 percent by weight of one or more enzymes capable of functioning in a bleaching composition for the removal of organic stains from fabrics; and from 0.1 to 20 percent by weight of at least one anhydrous salt selected from the group consisting of anhydrous sodium citrate, anhydrous magnesium sulfate, anhydrous calcium chloride and anhydrous zinc sulfate.
Claim 3
Dependent Claim
31 words
A dry, powder, enzyme-containing, bleaching composition according to claim 1 wherein the enzymes are selected from the group consisting of hydrolase, transferase, oxide-reductase, lyase, isomerase, ligase, protease, lipase, cellulase and amylase.
Claim 4
Dependent Claim
32 words
A dry, powder, enzyme-containing, bleaching composition according to claim 1 wherein the enzymes have an optimum temperature in the range of 10°-80° C. and an optimum pH in the range of 4-12.
Claim 5
Dependent Claim
24 words
A dry, powder, enzyme-containing, bleaching composition according to claim 1 wherein the inorganic peroxide has a water content of less than 2 wt. %.
Claim 6
Dependent Claim
25 words
A dry, powder, enzyme-containing, bleaching composition according to claim 4 wherein the enzymes are in the form of granules having a particle size 0.1-2.0 mm.
Claim 7
Dependent Claim
46 words
A dry, powder, enzyme-containing, bleaching composition according to claim 1, consisting essentially of from 20 to 85 percent by weight of said inorganic peroxide, from 0.1 to 5 percent by weight of said enzyme and from 0.5 to 15 percent by weight of said anhydrous salt.
Claim 8
Dependent Claim
28 words
A dry, powder, enzyme-containing, bleaching composition according to claim 6 in which said enzyme is selected from the group consisting of protease, lipase, cellulase, amylase and mixtures thereof.
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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) | 1986-04-25 | 1986-10-25 | 1987-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-25 | 1990-10-25 | 1991-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-25 | 1994-10-25 | 1995-04-26 | $7700.00 | Window Closed / Lapsed |