HEADWATERS RESOURCES, INC.
Patent Owner
Stats
- 7 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Feb 02, 2012 most recent publication
Details
- 7 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 273 Total Citation Count
- Jun 16, 1989 Earliest Filing
- 6 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
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Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
5565239 Method of making asphaltic roofing material containing class F fly ash fillerNov 04, 94Oct 15, 96[B05D]
5433520 Method and apparatus for continuously processing particulate cementitious material and fly ash solids and mixing them with a liquid to provide a liquid slurry of consistent proportionsDec 13, 93Jul 18, 95[B28C]
5299692 Method and apparatus for reducing carbon content in particulate mixturesFeb 03, 93Apr 05, 94[B03B]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
2012/0024,194 Method of Reducing Toxicity of Coal Combustion ResiduesAbandonedJul 29, 11Feb 02, 12[C04B, B01D]
6827776 Method for accelerating setting of cement and the compositions produced therefromExpiredAug 26, 02Dec 07, 04[C04B]
6740155 Method of delaying the set time of cement and the compositions produced therefromExpiredAug 26, 02May 25, 04[C04B]
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