US3953350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foaming bleaching composition
Assignee: Kao Corp
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Filing: 1974-10-21
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Granted: 1976-04-27
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Expires: 1994-10-21
Abstract
Abstract A bleaching composition is disclosed characterized by containing sodium percarbonate which was treated by subjecting it to heating at a temperature of 75° to 135°C, for a heating time ranging (1) from 2 to 6 hours at 75°C to (2) 5 to 30 minutes at 135°C.
Inventors
- 👤 Takashi Fujino
- 👤 Masaaki Nishimura
- 👤 Makoto Yamanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:04
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/055; C01B15/10; C01B15/103; C01B15/106; C11; C11D; C11D17/00; C11D17/0047; C11D17/0065; C11D17/0073; C11D3/00; C11D3/39; C11D3/3942
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
38 words
Sodium percarbonate which has been heated at a temperature of from 75° to 135°C, for a heating time in the range of from (1) 2 to 6 hours at 75°C, to (2) 5 to 30 minutes at 135°C.
Claim 2
Dependent Claim
38 words
Sodium percarbonate which has been heated at a temperature of from 75° to 135°C, for a heating time in the range of from (1) 2 to 6 hours at 75°C, to (2) 5 to 30 minutes at 135°C.
Claim 3
Dependent Claim
36 words
A composition consisting essentially of from 10 to 90 weight percent of the sodium percarbonate of claim 1, and the balance is one or more of water-soluble builder salts, water-soluble filler salts and water-soluble clothes-washing surfactants.
Claim 4
Dependent Claim
46 words
A bleaching composition consisting essentially of 1. from 30 to 90 weight percent of the sodium percarbonate of claim 1, 2. from 3 to 10 weight percent of water-soluble clothes-washing surfactant, and 3. from 6 to 30 weight percent of water-soluble inorganic builder and filler salts.
Claim 5
Dependent Claim
14 words
A bleaching composition as claimed in claim 3, in the form of a tablet.
Claim 6
Dependent Claim
46 words
A bleaching detergent composition consisting essentially of 1. 10 to 35 weight percent of the sodium percarbonate of claim 1, 2. from 5 to 30 weight percent of water-soluble clothes-washing surfactant, and 3. from 30 to 60 weight percent of water-soluble inorganic builder and filler salts.
Claim 7
Dependent Claim
15 words
A bleaching detergent composition as claimed in claim 5, in the form of a tablet.
Claim 8
Independent Claim
57 words
A method of preparing sodium percarbonate that possesses a foaming property and an increased velocity of dissolving in water, which consists essentially of heating sodium percarbonate at a temperature in the range of 75° to 135°C, for a heating time ranging from (1) 2 to 6 hours at 75°C to (2) 5 to 30 minutes at 135°C.
Claim 9
Independent Claim
57 words
A method of preparing sodium percarbonate that possesses a foaming property and an increased velocity of dissolving in water, which consists essentially of heating sodium percarbonate at a temperature in the range of 75° to 135°C, for a heating time ranging from (1) 2 to 6 hours at 75°C to (2) 5 to 30 minutes at 135°C.
Claim 10
Dependent Claim
28 words
A method as claimed in claim 7, in which the sodium percarbonate contains mixed therein water-soluble clothes-washing surfactant, or water-soluble inorganic builder and filler salts, or mixtures thereof.
Claim 11
Dependent Claim
21 words
A method as claimed in claim 7 in which the sodium percarbonate is heated at 100° to 110°C for 1.5 hours.
References Cited (Backward Citations)
US3773678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-27 | 1979-10-27 | 1980-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-27 | 1983-10-27 | 1984-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-27 | 1987-10-27 | 1988-04-27 | $7700.00 | Window Closed / Lapsed |