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US4597884A
Expired / Lapsed
US
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Ice and snow melt
Assignee: Individual
•
Filing: 1984-10-02
•
Granted: 1986-07-01
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Expires: 2004-10-02
Abstract
Abstract An ice and snow melt material is provided which is a substrate of solid ice and snow melt material coated with a liquid ice and snow melt material. Urea is the preferred substrate and ethylene glycol is the preferred liquid coating.
Inventors
- 👤 Steve Greenwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:37
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; C09K3/185
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
23 words
A non-corrosive solid ice melting composition consisting of prill urea particles and a liquid antifreeze composition, said antifreeze composition coating said urea particles.
Claim 2
Dependent Claim
23 words
A non-corrosive solid ice melting composition consisting of prill urea particles and a liquid antifreeze composition, said antifreeze composition coating said urea particles.
Claim 3
Dependent Claim
21 words
An ice and snow melt as claimed in claim 1, wherein said coating is selected from ethylene glycol and propylene glycol.
Claim 4
Dependent Claim
20 words
An ice and snow melt as claimed in claim 2, wherein said coating further comprises corrosion inhibitors and wetting agents.
Claim 5
Dependent Claim
17 words
An ice and snow melt as claimed in claim 1, wherein said coating is aircraft deicing fluid.
References Cited (Backward Citations)
US3310494A
Cited
US3537900A
Cited
DE2124091A1
Cited
US3928654A
Cited
US4108669A
Cited
US4283297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-30 | 1993-12-30 | 1994-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-30 | 1997-12-30 | 1998-07-01 | $7700.00 | Window Closed / Lapsed |