US4512907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ice melter and method of making same
Assignee: IMC SALT Inc
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Filing: 1984-02-06
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Granted: 1985-04-23
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Expires: 2004-02-06
Abstract
Abstract This invention relates to a composition for melting ice, particularly for melting ice from driveways, sidewalks and the like. The composition includes a salt, more particularly sodium and/or potassium chloride and an amide such as urea. The method of making the composition includes the steps of (1) sizing the salt, (2) spraying a liquid amide thereon, and (3) drying the resultant composition.
Inventors
- 👤 Forrest M. McConnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:19
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; C09K3/185
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
53 words
An ice melter composition for use on driveways, sidewalks and the like comprising: a salt combination and an amide, said salt combination comprising a mixture of sodium and potassium chloride and said amide is urea, said sodium choride being present in the ratio by weight of 3 to 1 of said potassium chloride.
Claim 2
Dependent Claim
53 words
An ice melter composition for use on driveways, sidewalks and the like comprising: a salt combination and an amide, said salt combination comprising a mixture of sodium and potassium chloride and said amide is urea, said sodium choride being present in the ratio by weight of 3 to 1 of said potassium chloride.
Claim 3
Dependent Claim
68 words
An ice melter composition for use on driveways, sidewalks and the like comprising: a salt combination and an amide, said salt combination comprising a mixture of 3 parts by weight of sodium chloride to 1 part by weight of potassium chloride and said amide being urea which is present and coated on said salt combination in from about 1% to about 4% by weight of said salt combination.
Claim 4
Dependent Claim
68 words
An ice melter composition for use on driveways, sidewalks and the like comprising: a salt combination and an amide, said salt combination comprising a mixture of 3 parts by weight of sodium chloride to 1 part by weight of potassium chloride and said amide being urea which is present and coated on said salt combination in from about 1% to about 4% by weight of said salt combination.
Claim 5
Independent Claim
81 words
The method of making an ice melter composition comprising the steps of: (1) sizing the salt portion of said composition, (2) spraying the sized salt with a liquid amide, and (3) drying said composition, said salt being a mixture of sodium and potassium choride, said amide being urea, which is present in from about 1% to about 4% by weight of said salt, said urea being present in from about 1% to about 4% by weight of said sodium-potassium chloride mixture.
Claim 6
Independent Claim
81 words
The method of making an ice melter composition comprising the steps of: (1) sizing the salt portion of said composition, (2) spraying the sized salt with a liquid amide, and (3) drying said composition, said salt being a mixture of sodium and potassium choride, said amide being urea, which is present in from about 1% to about 4% by weight of said salt, said urea being present in from about 1% to about 4% by weight of said sodium-potassium chloride mixture.
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) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |