US5683619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
De-icing composition and method for making same
Assignee: Ossian Inc
•
Filing: 1997-01-27
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Granted: 1997-11-04
•
Expires: 2017-01-27
Abstract
Abstract A method of making a vegetation-friendly ice melting composition with sub-zero ice melting characteristics is described. The method of making the composition includes mixing from about 60-90 parts by weight non-fully hydrated ice melter, which is preferably calcium chloride with from about 10-40 parts by weight of fertilizer, which is preferably urea. The most preferred composition is about 70 parts by weight of calcium chloride and about 30 parts by weight urea. The calcium chloride and urea are preferably admixed first to coat the calcium chloride. To this mixture is added a measured amount of powdered non-fully hydrated calcium chloride as a solid coatant. The non-fully hydrated calcium chloride by hydration forms a coating around the ice melt base. The resultant mixture is discharged from the mixer, screened and packaged.
Inventors
- 👤 Kenneth C. Ossian
- 👤 Norbert J. Steinhauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:10
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; C09K3/185; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
132 words
A process of preparing a uniform free flowing vegetation-friendly ice melting composition, said process comprising: admixing an ice melter selected from the group consisting of non-fully hydrated calcium chloride and non-fully hydrated magnesium chloride with a fertilizer selected from the group consisting of potassium chloride and urea; uniformly coating for a time sufficient such that the ice melter and fertilizer are tacky and wetted but such that the fertilizer does not soak into the ice melter; applying as a solid coating non-fully hydrated calcium chloride particles, wherein the calcium chloride particles have a size of from 80 mesh to 200 mesh; and thereafter quick mixing for from one minute to five minutes to provide a second coating surrounding the added dry materials mix; and thereafter screening and packaging the ice melt composition.
Claim 2
Dependent Claim
132 words
A process of preparing a uniform free flowing vegetation-friendly ice melting composition, said process comprising: admixing an ice melter selected from the group consisting of non-fully hydrated calcium chloride and non-fully hydrated magnesium chloride with a fertilizer selected from the group consisting of potassium chloride and urea; uniformly coating for a time sufficient such that the ice melter and fertilizer are tacky and wetted but such that the fertilizer does not soak into the ice melter; applying as a solid coating non-fully hydrated calcium chloride particles, wherein the calcium chloride particles have a size of from 80 mesh to 200 mesh; and thereafter quick mixing for from one minute to five minutes to provide a second coating surrounding the added dry materials mix; and thereafter screening and packaging the ice melt composition.
Claim 3
Dependent Claim
15 words
A process according to claim 1 wherein the ice melter is non-fully hydrated calcium chloride.
Claim 4
Dependent Claim
11 words
A process according to claim 1 wherein the fertilizer is urea.
Claim 5
Dependent Claim
18 words
A process according to claim 1 wherein the solid coating of non-fully hydrated calcium chloride is the monohydrate.
Claim 6
Dependent Claim
18 words
A process according to claim 1 wherein the solid coating of non-fully hydrated calcium chloride is the dihydrate.
Claim 7
Dependent Claim
37 words
A process according to claim 1 wherein the amount of ice melter added during the admixing step is from about 60-90 parts by weight and the amount of fertilizer added is from about 10-40 parts by weight.
Claim 8
Dependent Claim
31 words
A process according to claim 6 wherein the amount of ice melter is from about 70-80 parts by weight and the amount of fertilizer is from about 20-30 parts by weight.
Claim 9
Dependent Claim
29 words
A process according to claim 7 wherein the amount of ice melter is about 70 parts by weight and the amount of fertilizer is about 30 parts by weight.
Claim 10
Dependent Claim
88 words
A process of preparing a uniform free-flowing vegetation-friendly ice melting composition comprising: slowly admixing about 50 parts by weight of non-fully hydrated calcium chloride with from about 20-30 parts by weight urea; uniformly coating the calcium chloride with the urea to form coated calcium chloride; adding from about 10-20 parts by weight non-fully-hydrated calcium chloride to the coated calcium chloride; quick mixing from about one minute to five minutes to provide a second coating surrounding the coated calcium chloride; and thereafter screening and packaging the ice melt composition.
Claim 11
Dependent Claim
88 words
A process of preparing a uniform free-flowing vegetation-friendly ice melting composition comprising: slowly admixing about 50 parts by weight of non-fully hydrated calcium chloride with from about 20-30 parts by weight urea; uniformly coating the calcium chloride with the urea to form coated calcium chloride; adding from about 10-20 parts by weight non-fully-hydrated calcium chloride to the coated calcium chloride; quick mixing from about one minute to five minutes to provide a second coating surrounding the coated calcium chloride; and thereafter screening and packaging the ice melt composition.
Claim 12
Dependent Claim
8 words
The product of the process of claim 9.
Claim 13
Dependent Claim
115 words
A vegetation-friendly ice melting composition comprising: a first layer of ice melter selected from the group consisting of non-fully hydrated calcium chloride and non-fully hydrated magnesium chloride; a second layer of fertilizer on said first layer of ice melter wherein the fertilizer is selected from the group consisting of urea and potassium chloride; a third layer of ice melter on said second layer of fertilizer wherein the third layer of ice melter is selected from the group consisting of non-fully hydrated calcium chloride and non-fully hydrated magnesium chloride; wherein said vegetation-friendly ice melting composition has an overall concentration of from about 60-90 parts by weight ice melter and from about 10-40 parts by weight fertilizer.
Claim 14
Dependent Claim
115 words
A vegetation-friendly ice melting composition comprising: a first layer of ice melter selected from the group consisting of non-fully hydrated calcium chloride and non-fully hydrated magnesium chloride; a second layer of fertilizer on said first layer of ice melter wherein the fertilizer is selected from the group consisting of urea and potassium chloride; a third layer of ice melter on said second layer of fertilizer wherein the third layer of ice melter is selected from the group consisting of non-fully hydrated calcium chloride and non-fully hydrated magnesium chloride; wherein said vegetation-friendly ice melting composition has an overall concentration of from about 60-90 parts by weight ice melter and from about 10-40 parts by weight fertilizer.
Claim 15
Dependent Claim
22 words
An ice melting composition according to claim 11 wherein the ice melter is non-fully hydrated calcium chloride and the fertilizer is urea.
Claim 16
Dependent Claim
30 words
An ice melting composition according to claim 12 wherein the composition has an overall concentration of about 70 parts by weight calcium chloride and about 30 parts by weight urea.
References Cited (Backward Citations)
US2308289A
Cited
US2716068A
Cited
US2988509A
Cited
JPS493853A
Cited
US4148938A
Cited
US4094805A
Cited
DE2849810A1
Cited
US4431558A
Cited
DE3141644A1
Cited
US4512907A
Cited
CA1217040A
Cited
USRE32477E
Cited
JPS60195178A
Cited
US4606835A
Cited
US4676918A
Cited
JPS62141091A
Cited
US4778615A
Cited
JPS6386791A
Cited
JPS6397683A
Cited
JPS63117089A
Cited
JPH01163285A
Cited
JPS63236802A
Cited
US5057159A
Cited
US4877458A
Cited
US4960531A
Cited
US5135674A
Cited
US5079036A
Cited
EP0490796A1
Cited
US5211869A
Cited
US5453212A
Cited
US5482638A
Cited
US5366650A
Cited
US5599475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-11-03 | 2001-05-05 | 2001-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-03 | 2005-05-05 | 2005-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-03 | 2009-05-05 | 2009-11-04 | $7700.00 | Window Closed / Lapsed |