DUBOIS CHEMICALS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 451
 
  
 
D21F PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON425
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 339
 
  
 
B08B CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL 355
 
  
 
C11D DETERGENT COMPOSITIONS 362
 
  
 
D21G CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES 310
 
  
 
B01D SEPARATION 2132
 
  
 
C23F NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACES 234
 
  
 
B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 186
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0029,748 METHOD OF IMPROVING PAPER MACHINE FABRIC PERFORMANCEJul 27, 16Feb 02, 17[B08B, D06B, D21F, C11D]
2016/0177,505 METHOD FOR CONTROLLING DEPOSITS ON PAPERMAKING SURFACESDec 17, 15Jun 23, 16[C09D, D21F]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9856398 Method for controlling deposits on papermaking surfacesDec 17, 15Jan 02, 18[C09D, D21H, D21F]
9751782 Wastewater treatment system and methodMar 14, 13Sep 05, 17[C02F, B01D]
9512387 Cleaning compositions for removing polymeric contaminants from papermaking surfacesDec 12, 11Dec 06, 16[B08B, C11D]
9028920 Pretreatment of metal surfaces prior to paint using polyaniline particlesMar 28, 12May 12, 15[B05D]
8784679 Aqueous powder water treatment compositions and methods for making sameOct 25, 11Jul 22, 14[C02F]
7918968 Apparatus for cleaning paper machine press fabrics on-the-runNov 22, 10Apr 05, 11[D21G]
7850824 Apparatus for cleaning paper machine press fabrics on-the-runOct 02, 09Dec 14, 10[D21G]
7833332 Coating solution for metal surfacesNov 03, 08Nov 16, 10[C23C, C23F]
7718587 Composition and method for lubricating conveyor trackApr 26, 04May 18, 10[C10M]
7597782 Press stable method of cleaning paper machine press fabrics on-the-runOct 11, 06Oct 06, 09[D21F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0148,279 METHOD OF REMOVING POLYMERIC CONTAMINANTS FROM PAPERMAKING SURFACESAbandonedFeb 04, 15May 28, 15[B08B, C11D]
2012/0279,912 Chemical Mixing System and MethodAbandonedMay 02, 11Nov 08, 12[F16L, G05D, B01F, C02F]
2009/0211,598 Tire shine unit and method of using sameAbandonedJul 10, 08Aug 27, 09[B08B, B60S]
2007/0163,968 Method and apparatus for providing treatment chemicals to process water systemsAbandonedJan 17, 06Jul 19, 07[C02F]
2007/0164,258 Enhanced galvanized corrosion inhibitorAbandonedJan 17, 06Jul 19, 07[C23F]
7192912 No VOC solvent blendExpiredMar 18, 04Mar 20, 07[C11D]
2006/0272,789 Method of treating papermaking fabricAbandonedJun 02, 05Dec 07, 06[D21F]
2006/0086,282 Phosphate conversion coating and processAbandonedNov 09, 04Apr 27, 06[B05C, C04B]
2006/0019,854 Paper mill cleaner with taedAbandonedJul 21, 04Jan 26, 06[C11D]
6887308 Metal coating coupling compositionExpiredJan 21, 03May 03, 05[C09D]
6846419 Phosphonamide and phosphonamide blend compositions and method to treat waterExpiredJan 21, 03Jan 25, 05[C02F]
6797197 Modified amine for boiler water treatmentExpiredAug 30, 02Sep 28, 04[C09K, C02F]
6779539 Dispensing apparatus for delivering controlled amounts of water soluble material to a process streamExpiredFeb 26, 03Aug 24, 04[B01D]
6316398 General purpose cleaning compositionExpiredMay 09, 00Nov 13, 01[C11D]
5800732 All-in-one treatment agent for cooling waterExpiredFeb 07, 97Sep 01, 98[C02F]

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