Patent US3639283A successfully refreshed from Google Patents.
US3639283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam-cleaning additives, composition and methods
Assignee: WR Grace and Co
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Filing: 1969-10-10
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Granted: 1972-02-01
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Expires: 1989-10-10
Abstract
Abstract The invention disclosed is for a new improved foamable industrial cleaning composition having either a highly acid or highly basic character and containing an effective foam generating and stabilizing assistant.
Inventors
- 👤 Homer Edward Crotty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:06
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0094; C11D1/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
37 words
The solution of claim 1 wherein the foaming assistant composition is present in an amount from about 0.01 to about 0.10 part by weight of foaming assistant composition per part by weight of primary active cleaning ingredient.
Claim 2
Dependent Claim
37 words
The solution of claim 2 wherein the foaming assistant composition is present in an amount from about 0.025 to about 0.040 part by weight of foaming assistant composition per part by weight of primary active cleaning ingredient.
Claim 3
Dependent Claim
22 words
The solution of claim 1 wherein the primary active cleaning ingredient is at least about 0.6 part by weight of sodium hydroxide.
Claim 4
Dependent Claim
42 words
The solution of claim 1 wherein the primary active cleaning ingredient is at least about 0.85 part by weight of sulfamic acid and the primary active cleaning solution includes from about 0.15 to about 0.20 part by weight of foaming assistant composition.
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |