US3619115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cool water laundering process
Assignee: Procter and Gamble Co
•
Filing: 1967-09-08
•
Granted: 1971-11-09
•
Expires: 1987-09-08
Abstract
Abstract A process for laundering fabrics in 60* F.-90* F. Water containing .05-.5 percent of a detergent composition containing 4-35 percent of specific zwitterionic detergents and 8-90 percent of detergency builders which complex the calcium and magnesium ions in hard water.
Inventors
- 👤 Francis L Diehl
- 👤 Norman R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:06
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/88; C11D1/92; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/05
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
11 words
3-(N,N-dibutyl-N-alkylammonio) propane-1sulfonates wherein the alkyl group contains about 12 carbon atoms;
Claim 2
Dependent Claim
10 words
The process of claim 1 wherein Compound (A) is 3-(N,N-dimethyl-N-hexadecylamminio)propane-1-sulfonate.
Claim 3
Dependent Claim
1 words
ethylenediaminetetraacetates;
Claim 4
Dependent Claim
10 words
The process of claim 1 wherein Compound (A) is 3(N,N-dimethyl-N-dodecylammonio)-2-hydroxypropane-1-sulfonate.
Claim 5
Dependent Claim
14 words
3-(N,N-dimethyl-N-alkylammonio)-2-hydroxypropane-1-sulfonates wherein the alkyl group contains from about 12 to about 16 carbon atoms;
Claim 6
Dependent Claim
1 words
N-(2-hydroxyethyl)-ethylenediamine-triacetates;
Claim 7
Dependent Claim
1 words
nitrilotriacetates,
Claim 8
Dependent Claim
10 words
3-(N,N-diemthyl-N-alkylammonio)1,1,3-trimethylpropane-1-sulfonate wherein the alkyl group contains about 12 carbon atoms;
Claim 9
Dependent Claim
9 words
The process of claim wherein Compound (A) is 3-(N,N-dimethyl-N-coconutalkylammonio)-1-sulfonate.
Claim 10
Dependent Claim
12 words
The process of claim 1 wherein Compound (B) consists essentially of tripolyPhosphates.
Claim 11
Dependent Claim
3 words
2-(N,N,-dimethyl-N-coconutalkylammonio)-ethane-1-sulfonates; ethane-1-sulfonates; and
Claim 12
Dependent Claim
1 words
N-(2-hydroxyethyl)-nitrilodiacetates;
Claim 13
Dependent Claim
1 words
phytates;
Claim 14
Dependent Claim
21 words
mixtures thereof; B. from about 0.004 percent to about 0.45 percent of a detergency builder selected from the group consisting of
Claim 15
Dependent Claim
2 words
tripolyphosphates; and
Claim 16
Dependent Claim
43 words
mixtures thereof in the form of their sodium, potassium, triethanolammonium, diethanolammonium, and monoethanol-ammonium salts and mixtures thereof; and C. water, wherein the ratio of A to B by parts, ranges from about 5:1 to about 1:25 , all percentages herein being by weight.
References Cited (Backward Citations)
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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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |