US4606835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salt composition having smaller sized sodium metasilicate
Assignee: CHEMOPHARM LABORATORY Inc A UT CORP
•
Filing: 1984-12-21
•
Granted: 1986-08-19
•
Expires: 2004-12-21
Abstract
Abstract A dry and free-flowing composition containing salt, C 2 to C 6 monohydric and/or polyhydric alcohol, diatomaceous earth (or suitable substitute) and sodium metasilicate characterized by a particle size smaller than about 80 mesh. The composition is useful for facilitating the melting and removal of snow and ice.
Inventors
- 👤 Alfred Lieber
- 👤 Jack L. Simper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:37
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; C09K3/185
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
132 words
A dry and free-flowing composition useful for facilitating the melting and removal of snow and ice comprising: (a) 100 parts by weight of salt; (b) from about 0.5 to about 2.0 parts by weight per 100 parts by weight of salt of a member selected from the group consisting of C 2 to C 6 monohydric alcohols, polyhydric alcohols, and mixtures thereof; (c) from about 0.5 to about 4.0 parts by weight per 100 parts by weight of salt of a member selected from the group consisting of diatomaceous earth, calcium silicate, fumed silica, powdered bentonite, talc, starch, and mixtures thereof; and (d) from about 0.5 to about 2.0 parts by weight per 100 parts by weight of salt of sodium metasilicate characterized by a particle size smaller than about 80 mesh.
Claim 2
Dependent Claim
132 words
A dry and free-flowing composition useful for facilitating the melting and removal of snow and ice comprising: (a) 100 parts by weight of salt; (b) from about 0.5 to about 2.0 parts by weight per 100 parts by weight of salt of a member selected from the group consisting of C 2 to C 6 monohydric alcohols, polyhydric alcohols, and mixtures thereof; (c) from about 0.5 to about 4.0 parts by weight per 100 parts by weight of salt of a member selected from the group consisting of diatomaceous earth, calcium silicate, fumed silica, powdered bentonite, talc, starch, and mixtures thereof; and (d) from about 0.5 to about 2.0 parts by weight per 100 parts by weight of salt of sodium metasilicate characterized by a particle size smaller than about 80 mesh.
Claim 3
Dependent Claim
17 words
A composition in accordance with claim 1 wherein (b) is 1,2-propylene glycol and (c) is diatomaceous earth.
Claim 4
Dependent Claim
14 words
A composition in accordance with claim 2 wherein (d) is anhydrous sodium metasilicate fines.
Claim 5
Dependent Claim
63 words
A composition in accordance with claim 3 herein said composition further comprises (e) urea and (f) sodium ferrocyanide; wherein (e) is within the range of about 6 to about 12 parts by weight per 100 parts by weight of salt; and wherein (f) is within the range of about 0.05 to about 0.2 parts by weight per 100 parts by weight of salt.
Claim 6
Dependent Claim
27 words
A composition in accordance with claim 4 wherein most of (d) is smaller than 100 mesh and a substantial portion of (d) is smaller than 200 mesh.
References Cited (Backward Citations)
US1141446A
Cited
US1825151A
Cited
US2574763A
Cited
US3208822A
Cited
FR1344958A
Cited
US3285859A
Cited
US3505234A
Cited
US3340018A
Cited
US3542686A
Cited
US3490744A
Cited
US3704230A
Cited
US3996399A
Cited
US4031024A
Cited
US3986969A
Cited
US4283297A
Cited
GB2036062A
Cited
US4341649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |