Patent US4050944A successfully refreshed from Google Patents.
US4050944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ground marking foam
Assignee: Holloway Farm Supply Inc
•
Filing: 1976-02-23
•
Granted: 1977-09-27
•
Expires: 1996-02-23
Abstract
Abstract A composition for producing foam is in the form of a concentrate, to be extended or diluted at the point of use in the ratio of about 1 part concentrate to 50 to 80 parts water. The concentrate includes, as principal ingredients, a surfactant functioning as a foam producing ingredient comprising about 5 to 12 percent of the concentrate, a foam stabilizing ingredient to improve the stability or longevity of the foam comprising about 1 to 10 percent of the concentrate; and water as a diluent comprising about 70 to 90 percent of the concentrate. Secondary or optional components of the concentrate may include a water softening ingredient comprising about 0.1 to 5 percent of the concentrate, a buffering agent for stabilizing the pH of the concentrate comprising about 1 to 10 percent of the concentrate, a viscosity reducing ingredient comprising about 1 to 15 percent of the concentrate, and a water soluble coloring ingredient or dye.
Inventors
- 👤 Dwayne L. Cartwright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:54
CPC Classifications
A; A01; A01M; A01M7/00; A01M7/0082; A01N; A01N25/00; A01N25/16; C; C09; C09K; C09K23/00; C09K23/017
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
104 words
A composition effective for producing an agricultural ground marking foam by passing air therethrough, comprising a concentrate to be further extended with water in the ratio of about 1 part concentrate to 80 parts water, by volume; said concentrate consisting essentially of: sodium lauryl sulfate functioning as a foam producing ingredient; said foam producing ingredient comprising of 5 to 12 percent of the concentrate by weight; n-lauryl betaine functioning as a foam stabilizer; said foam stabilizer comprising 1 to 10 percent of said concentrate by weight; and water functioning as a diluent; said diluent comprising 70 to 90 percent of said concentrate by weight.
Claim 2
Dependent Claim
104 words
A composition effective for producing an agricultural ground marking foam by passing air therethrough, comprising a concentrate to be further extended with water in the ratio of about 1 part concentrate to 80 parts water, by volume; said concentrate consisting essentially of: sodium lauryl sulfate functioning as a foam producing ingredient; said foam producing ingredient comprising of 5 to 12 percent of the concentrate by weight; n-lauryl betaine functioning as a foam stabilizer; said foam stabilizer comprising 1 to 10 percent of said concentrate by weight; and water functioning as a diluent; said diluent comprising 70 to 90 percent of said concentrate by weight.
Claim 3
Dependent Claim
62 words
A composition as set forth in claim 1 wherein said concentrate further consists of: tetrasodium salt of ethylenediamine tetraacetic acid functioning as a water softener; said water softener comprising 0.1 percent to 5 percent of said concentrate by weight; isopropyl alcohol functioning as a viscosity reducing agent; said viscosity reducing agent comprising 1 percent to 15 percent of said concentrate by weight.
Claim 4
Dependent Claim
78 words
A composition as set forth in claim 2 wherein said foam producing ingredient comprises about 12 percent of said concentrate by weight; wherein said foam stabilizer ingredient comprises about 4 percent of said concentrate by weight; wherein said water softening ingredient comprises about 2 percent of said concentrate by weight; wherein said viscosity reducing ingredient comprises about 5 percent of said concentrate by weight; and wherein said water diluent comprises about 77 percent of said concentrate by weight.
Claim 5
Independent Claim
125 words
A method for producing a foam, effective to be deposited on the ground as a ground marking material to guide the application by swaths of agricultural chemicals, which method comprises preparing a concentrate composition consisting essentially of: sodium lauryl sulfate functioning as a foam producing ingredient; said foam producing ingredient comprising of 5 to 12 percent of the concentrate by weight; n-lauryl betaine functioning as a foam stabilizer; said foam stabilizer comprising 1 to 10 percent of said concentrate by weight; and water functioning as a diluent; said diluent comprising 70 percent to 90 percent of said concentrate by weight; extending said concentrate composition with water in a ratio of about 1 part concentrate to 80 parts water; and passing air through said extended concentrate.
Claim 6
Independent Claim
125 words
A method for producing a foam, effective to be deposited on the ground as a ground marking material to guide the application by swaths of agricultural chemicals, which method comprises preparing a concentrate composition consisting essentially of: sodium lauryl sulfate functioning as a foam producing ingredient; said foam producing ingredient comprising of 5 to 12 percent of the concentrate by weight; n-lauryl betaine functioning as a foam stabilizer; said foam stabilizer comprising 1 to 10 percent of said concentrate by weight; and water functioning as a diluent; said diluent comprising 70 percent to 90 percent of said concentrate by weight; extending said concentrate composition with water in a ratio of about 1 part concentrate to 80 parts water; and passing air through said extended concentrate.
Claim 7
Dependent Claim
63 words
A method as set forth in claim 4 wherein said concentrate composition further consists of: tetrasodium salt of ethylenediamine tetraacetic acid functioning as a water softener; said water softener comprising 0.1 percent to 5 percent of said concentrate by weight; isopropyl alcohol functioning as a viscosity reducing agent; said viscosity reducing agent comprising 1 percent to 15 percent of said concentrate by weight.
Claim 8
Dependent Claim
42 words
A method as set forth in claim 5 wherein the weight percentages of said concentrate composition ingredients are: sodium lauryl sulfate, about 12% n-lauryl betaine, about 4% tetrasodium salt of ethylenediamine tetraacetic acid about 2% isopropyl alcohol about 5% water about 77%.
Claim 9
Dependent Claim
27 words
A method as set forth in claim 4 wherein said air is passed through said extended concentrate at a pressure of about 20 psi to 40 psi.
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) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |