US4035148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet cleaning and soil repellent compositions
Assignee: Procter and Gamble Co
•
Filing: 1976-05-06
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Granted: 1977-07-12
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Expires: 1996-05-06
Abstract
Abstract A substantially surfactant-free composition consists essentially of a water-soluble phosphate and a water-insoluble alumina having a particle size less than 3 microns. An aqueous mixture of the phosphate and alumina is useful for cleaning carpets and imparting a soil repellent finish thereto.
Inventors
- 👤 Carroll A. Metzger
- 👤 Fred M. Habermehl, III
- 👤 Ned C. Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:55
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/02; C11D7/20; C11D3/00; C11D3/0005; C11D3/0031; C11D7/04; C11D7/10; C11D7/16
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
64 words
A substantially surfactant-free composition useful for cleaning of carpets and imparting thereto a soil repellent finish consisting essentially of: (a) a water-soluble phosphate, and (b) a water-insoluble particulate alumina having an ultimate particle size less than 3 microns; wherein the ratio of phosphate to alumina is from 1:1 to 1:25 and wherein the composition contains less than 1% surfactant based on the phosphate-alumina mixture.
Claim 2
Dependent Claim
64 words
A substantially surfactant-free composition useful for cleaning of carpets and imparting thereto a soil repellent finish consisting essentially of: (a) a water-soluble phosphate, and (b) a water-insoluble particulate alumina having an ultimate particle size less than 3 microns; wherein the ratio of phosphate to alumina is from 1:1 to 1:25 and wherein the composition contains less than 1% surfactant based on the phosphate-alumina mixture.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein the water-soluble phosphate is an alkali metal or ammonium inorganic phosphate.
Claim 4
Dependent Claim
17 words
The composition of claim 2 wherein the ratio of phosphate to alumina is from 1:3 to 1:6.
Claim 5
Dependent Claim
19 words
The composition of claim 3 wherein the particle size of the alumina is from 0.005 microns to 0.1 microns.
Claim 6
Dependent Claim
11 words
The composition of claim 4 wherein the phosphate is sodium tripolyphosphate.
Claim 7
Dependent Claim
10 words
The composition of claim 1 wherein the composition is surfactant-free.
Claim 8
Dependent Claim
59 words
A concentrated aqueous substantially surfactant-free carpet cleaning and soil-repellent composition consisting essentially of: (a) from 0.8% to 12% of a water-soluble phosphate; (b) from 4% to 40% of a water-insoluble particulate alumina having an ultimate particle size less than 3 microns; and (c) the balance water wherein the composition contains less than 1% surfactant based on the phosphate-alumina mixture.
Claim 9
Dependent Claim
59 words
A concentrated aqueous substantially surfactant-free carpet cleaning and soil-repellent composition consisting essentially of: (a) from 0.8% to 12% of a water-soluble phosphate; (b) from 4% to 40% of a water-insoluble particulate alumina having an ultimate particle size less than 3 microns; and (c) the balance water wherein the composition contains less than 1% surfactant based on the phosphate-alumina mixture.
Claim 10
Dependent Claim
16 words
The composition of claim 7 wherein the phosphate is an alkali metal or ammonium inorganic phosphate.
Claim 11
Dependent Claim
32 words
The composition of claim 8 consisting essentially of: (a) from 2% to 6% of the water-soluble phosphate; (b) from 12% to 24% of the water-insoluble particulate alumina; and (c) the balance water.
Claim 12
Dependent Claim
19 words
The composition of claim 9 wherein the alumina has a particle size of from 0.005 microns to 0.1 microns.
Claim 13
Dependent Claim
11 words
The composition of claim 10 wherein the phosphate is sodium tripolyphosphate.
Claim 14
Dependent Claim
10 words
The composition of claim 7 wherein the composition is surfactant-free.
Claim 15
Dependent Claim
59 words
An aqueous ready-to-use substantially surfactant-free carpet cleaning and soil repellent composition consisting essentially of: (a) from 0.2% to 4% of a water-soluble phosphate; from 1% to 10% of a water-insoluble particulate alumina having an ultimate particle size less than 3 microns; and (c) the balance water wherein the composition contains less than 1% surfactant based on the phosphate-alumina mixture.
Claim 16
Dependent Claim
59 words
An aqueous ready-to-use substantially surfactant-free carpet cleaning and soil repellent composition consisting essentially of: (a) from 0.2% to 4% of a water-soluble phosphate; from 1% to 10% of a water-insoluble particulate alumina having an ultimate particle size less than 3 microns; and (c) the balance water wherein the composition contains less than 1% surfactant based on the phosphate-alumina mixture.
Claim 17
Dependent Claim
16 words
The composition of claim 13 wherein the phosphate is an alkali metal or ammonium inorganic phosphate.
Claim 18
Dependent Claim
32 words
The composition of claim 14 consisting essentially of: (a) from 0.5% to 1.5% of the water-soluble phosphate; (b) from 3% to 6% of the water-soluble particulate alumina; and (c) the balance water.
Claim 19
Independent Claim
86 words
A method of cleaning a carpet and imparting a soil repellent finish thereto comprising the steps of: 1. applying an effective amount to the carpet of a substantially surfactant-free composition consisting essentially of: (a) from 0.2% to 4% of a water-soluble phosphate; (b) from 1% to 10% of a water-insoluble particulate alumina having an ultimate particle size less than 3 microns; and (c) the balance water wherein the composition contains less than 1% surfactant based on the phosphate-alumina mixture; and 2. drying and vacuuming the carpet.
Claim 20
Independent Claim
86 words
A method of cleaning a carpet and imparting a soil repellent finish thereto comprising the steps of: 1. applying an effective amount to the carpet of a substantially surfactant-free composition consisting essentially of: (a) from 0.2% to 4% of a water-soluble phosphate; (b) from 1% to 10% of a water-insoluble particulate alumina having an ultimate particle size less than 3 microns; and (c) the balance water wherein the composition contains less than 1% surfactant based on the phosphate-alumina mixture; and 2. drying and vacuuming the carpet.
Claim 21
Dependent Claim
16 words
The method of claim 16 wherein the phosphate is an alkali metal or ammonium inorganic phosphate.
Claim 22
Dependent Claim
33 words
The method of claim 16 wherein the composition consists essentially of: (a) from 0.5% to 1.5% of the water-soluble phosphate; (b) from 3% to 6% of the alumina; and (c) the balance water.
Claim 23
Dependent Claim
19 words
The method of claim 18 wherein the alumina has a particle size of from 0.005 microns to 0.1 microns.
Claim 24
Dependent Claim
11 words
The method of claim 19 wherein the phosphate is sodium tripolyphosphate.
Claim 25
Dependent Claim
31 words
The method of claim 20 wherein the composition is applied to the carpet at a rate of from 50 cc per square meter carpet to 1000 cc per square meter carpet.
Claim 26
Dependent Claim
10 words
The method of claim 16 wherein the composition is surfactant-free.
References Cited (Backward Citations)
US3736259A
Cited
US3716488A
Cited
US3775052A
Cited
US4002571A
Cited
US3748268A
Cited
CA985113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |