US3625902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing agglomerated detergent composition
Assignee: Lever Brothers Co
•
Filing: 1968-10-11
•
Granted: 1971-12-07
•
Expires: 1988-10-11
Abstract
Abstract A method of producing agglomerates of detergent ingredients by charging particulate detergent ingredients into an agglomeration zone and maintaining a falling curtain of said ingredients in said zone, contacting said particulate material in said falling curtain with liquid material to agglomerate said particulate material, maintaining a tumbling bed of agglomerating ingredients at the base of said falling curtain and withdrawing agglomerated material from said agglomeration zone.
Inventors
- 👤 Clark A Sumner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:43
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/395; C11D3/3958; B; B01; B01J; B01J2/00; B01J2/12; B01J2/16; C11D11/00; C11D11/0082; C11D11/0088
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
18 words
The method of claim 1 in which said withdrawing agglomerated material from said agglomeration zone is done continuously.
Claim 2
Dependent Claim
113 words
The method of claim 1 in which said detergent ingredients consist essentially of (A) about 30 to 60 parts by weight of sodium tripolyphosphate, (B) about 10 to 35 parts by weight of chlorinated trisodium phosphate, (C) about 4 to 15 parts by weight of a sodium silicate having a Na20 to Si02 ratio of about 1:3.75 to 2:1, (D) about 0.5 to 3 parts by weight of a nonionic surfactant that has little or no tendency to foam by itself or in the presence of foam-producing food soil and is compatible with chlorinated trisodium phosphate and (E) water in an amount at least sufficient to permit complete hydration of said sodium tripolyphosphate.
Claim 3
Dependent Claim
18 words
The method of claim 1 in which said detergent ingredients also include as an optional ingredient soda ash.
Claim 4
Dependent Claim
19 words
The method of claim 1 in which said detergent ingredients also includes as optional ingredients soda ash and borax.
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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |