US4409116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Windshield wiper cleaning product
Assignee: Individual
•
Filing: 1982-08-18
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Granted: 1983-10-11
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Expires: 2002-08-18
Abstract
Abstract Product for cleaning windshield wiper blades which includes a single use packaged cleansing unit including a sheet or towelette of liquid absorbant material impregnated with a windshield wiper cleaning liquid and enclosed in a sealed, tearable, gas-tight envelope. The cleaning liquid contains an aqueous solution of ammonium hydroxide which is of a concentration between 0.1N and 3N, the ammonium hydroxide solution making up between 10% and 50% of the liquid by volume; acetone making up between 30% and 80% of the liquid by volume; and an alcohol having 1-5 carbon atoms, inclusive, the alcohol making up between 2% and 50% of the liquid by volume.
Inventors
- 👤 Richard Lodico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:34
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/04; C11D17/049; C11D7/00; C11D7/02; C11D7/04; C11D7/06; C11D7/50; C11D7/5004; C11D7/5022; B; B60; B60S; B60S1/00; B60S1/02; B60S1/04; B60S1/32; B60S1/38; B60S2001/3846; Y; Y10; Y10S; Y10S206/00; Y10S206/812
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
A product for cleaning windshield wiper blades comprising a single use packaged cleansing unit comprising a sheet of liquid absorbant material impregnated with a windshield wiper cleaning liquid, said sheet of material being enclosed in a sealed, tearable, gas-tight envelope, said windshield wiper cleaning liquid comprising an aqueous solution of ammonium hydroxide which has a concentration between 0.1 N and 3 N, said ammonium hydroxide solution comprising between 10% and 50% of said liquid, by volume, acetone, said acetone comprising between 30% and 80% of said liquid, by volume, and an alcohol having between one and five carbon atoms, inclusive, said alcohol comprising between 2% and 50% of said liquid, by volume.
Claim 2
Dependent Claim
112 words
A product for cleaning windshield wiper blades comprising a single use packaged cleansing unit comprising a sheet of liquid absorbant material impregnated with a windshield wiper cleaning liquid, said sheet of material being enclosed in a sealed, tearable, gas-tight envelope, said windshield wiper cleaning liquid comprising an aqueous solution of ammonium hydroxide which has a concentration between 0.1 N and 3 N, said ammonium hydroxide solution comprising between 10% and 50% of said liquid, by volume, acetone, said acetone comprising between 30% and 80% of said liquid, by volume, and an alcohol having between one and five carbon atoms, inclusive, said alcohol comprising between 2% and 50% of said liquid, by volume.
Claim 3
Dependent Claim
23 words
The product of claim 1 wherein said sheet of material is absorbant paper which is folded within said envelope, said envelope being rectangular.
Claim 4
Dependent Claim
25 words
The product of claim 1 wherein said liquid further comprises a fragrant oil, said oil comprising between 1.5% and 2% of said liquid, by volume.
Claim 5
Dependent Claim
12 words
The product of claim 3 wherein said fragrant oil is eucalyptus oil.
Claim 6
Dependent Claim
12 words
The product of claim 3 wherein said fragrant oil is wintergreen oil.
Claim 7
Dependent Claim
45 words
The product of claim 1 or claim 3 wherein said aqueous solution of ammonium hydroxide is 1 N, said alcohol is methanol, and said aqueous solution of ammonium hydroxide, said methanol, and said acetone are present in said cleaning liquid in the volumetric ratio 1:1:1.
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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) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |