HEADWATERS RESOURCES, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B03B SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS 36
 
  
 
A01K ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS147
 
  
 
B02C CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN 134
 
  
 
B03D FLOTATION; DIFFERENTIAL SEDIMENTATION 114
 
  
 
B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 186
 
  
 
B28C PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER 114
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156
 
  
 
E04D ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS 126

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5988396 Ultrasonic conditioning and wet scrubbing of fly ashAug 18, 98Nov 23, 99[B03D, B02C, B03B]
5565239 Method of making asphaltic roofing material containing class F fly ash fillerNov 04, 94Oct 15, 96[B05D]
5513755 Method and apparatus for reducing carbon content in fly ashApr 04, 94May 07, 96[B03B]
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]
5391417 Asphaltic roofing material with Class F fly ash fillerApr 22, 93Feb 21, 95[E04D, B32B]
5299692 Method and apparatus for reducing carbon content in particulate mixturesFeb 03, 93Apr 05, 94[B03B]
5199377 Artificial reefs manufactured from coal combustion by-productsApr 23, 92Apr 06, 93[A01K]

Expired/Abandoned/Withdrawn Patents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]
5693137 Use of alumina clay with cement fly ash mixturesExpiredNov 29, 95Dec 02, 97[C04B]
5040900 Sludge stabilizing method and apparatusExpiredMay 09, 90Aug 20, 91[B01F]
4943165 Sludge stabilizing method and apparatusExpiredJun 16, 89Jul 24, 90[B01F]

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