Patents by Inventor Kenneth L. Zack

Kenneth L. Zack has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7559955
    Abstract: Oily soil may be removed from a fabric by washing the oily soiled fabric in a heated (e.g., between about 100° C. to about 200° C. aqueous solution containing a polyethylenepolypropylene diblock surfactant having about 30 to 35 moles of propylene oxide (PO) and about 38 to 50 moles of ethylene oxide (EO).
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: July 14, 2009
    Assignee: BASF Corporation
    Inventors: Glenis R. Mente, Kenneth L. Zack
  • Patent number: 6803396
    Abstract: Aqueous superplasticizer solutions for concrete compositions include a polymeric superplasticizer and an air-detraining effective amount of a block polyether containing ethylene oxide and propylene oxide units.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: October 12, 2004
    Assignee: BASF Corporation
    Inventors: Sridhar Gopalkrishnan, Kenneth L. Zack, Karl-Heinz Buechner
  • Patent number: 6617297
    Abstract: Solid automatic dishwasher detergent tablets have a chlorine source to most preferably provide 0.5 to 5 percent available chlorine; and a chlorine stability enhancing effective amount of preferably between about 0.5 to about 10 percent by weight of one or more nonionic surfactants having the following structure: R—(AO1)x(AO2)y—OR′ wherein: R is a C6-C18 alkyl group, AO1 represents propylene oxide or a mixture of propylene oxide and other alkylene oxides, AO2 represents ethylene oxide or a mixture of ethylene oxide and other alkylene oxides, R′ is an alkyl, arylalkyl, or benzalkyl group with 1 to about 10 carbon atoms, x is 2-20, y is 0-20, and the sum of x plus y is 5 or greater. The nonionic surfactant imparts improved chlorine stability to the tablet such that greater than 80 percent of the chlorine in the tablet remains active for eight weeks when the tablet is stored at 120° F.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: September 9, 2003
    Assignee: BASF Corporation
    Inventors: Glenis R. Mente, Kenneth L. Zack, Michael C. Welch
  • Publication number: 20030073760
    Abstract: Aqueous superplasticizer solutions for concrete compositions include a polymeric superplasticizer and an air-detraining effective amount of a block polyether containing ethylene oxide and propylene oxide units.
    Type: Application
    Filed: August 16, 2001
    Publication date: April 17, 2003
    Inventors: Sridhar Gopalkrishnan, Kenneth L. Zack, Karl-Heinz Buechner
  • Publication number: 20020187907
    Abstract: Solid automatic dishwasher detergent tablets have a chlorine source to most preferably provide 0.5 to 5 percent available chlorine; and a chlorine stability enhancing effective amount of preferably between about 0.
    Type: Application
    Filed: March 29, 2001
    Publication date: December 12, 2002
    Inventors: Glenis R. Mente, Kenneth L. Zack, Michael C. Welch
  • Patent number: 5998346
    Abstract: An improved powdered non-phosphate machine dishwashing composition comprising a blend of nonionic surfactants, builders, chlorine or non-chlorine bleach, bleach activators, enzymes and copolymers of alkylene oxides adducts of allyl alcohol and acrylic acid useful in reducing spotting and filming of dishware.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: December 7, 1999
    Assignee: BASF Corporation
    Inventors: Michael C. Welch, Kenneth L. Zack, Glenis Roberts
  • Patent number: 5880087
    Abstract: An improved rinse aid composition comprising a blend of nonionic low foam surfactants, hydrotropes, polycarboxylate polymers and alkyliminodialkanoates.
    Type: Grant
    Filed: December 28, 1996
    Date of Patent: March 9, 1999
    Inventors: Kenneth L. Zack, Michael C. Welch, Glenis Roberts
  • Patent number: 5759978
    Abstract: An improved non-phosphate, peroxygen based machine dishwashing composition comprising a blend of nonionic surfactants, builders, non-chlorine bleach, bleach precursors, enzymes, polycarboxylate polymers and homopolymers of polyalkyleneoxide wherein spotting and filming are substantially minimized.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: June 2, 1998
    Assignee: BASF Corporation
    Inventors: Michael C. Welch, Kenneth L. Zack
  • Patent number: 5753608
    Abstract: The present invention relates to rinse aid compositions comprising non-ionic surfactants, acrylic acid polymers and phosphate esters.
    Type: Grant
    Filed: December 28, 1996
    Date of Patent: May 19, 1998
    Assignee: BASF Corporation
    Inventors: Kenneth L. Zack, Michael C. Welch, Glenis Roberts
  • Patent number: 5750483
    Abstract: An improved powdered non-phosphate, peroxygen based machine dishwashing compositions comprising a blend of nonionic surfactants, builders, non-chlorine bleach, bleach precursors, enzymes, polycarboxylate polymers and nonionic graft copolymers of vinyl acetate and polyalkyleneoxide wherein spotting and filming are substantially minimized.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: May 12, 1998
    Assignee: BASF Corporation
    Inventors: Michael C. Welch, Kenneth L. Zack
  • Patent number: 5739099
    Abstract: An improved rinse aid composition comprising a blend of nonionic, cationic, anionic, zwitterionic and amphoteric surfactants, hydrotropes, and copolymers of alkylene oxide adducts of allyl alcohol and acrylic acid useful in reducing spotting and filming of dishware.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: April 14, 1998
    Assignee: BASF Corporation
    Inventors: Michael C. Welch, Kenneth L. Zack, Glenis Roberts
  • Patent number: 5518648
    Abstract: A machine dishwashing composition is provided wherein two specifically defined nonionic surfactants are utilized which in combination have been shown through empirical research to surprisingly yield improved results. One of the nonionic surfactants is an alcohol alkoxylate (as defined) and the other nonionic surfactant is a block copolymer of ethylene oxide and propylene oxide (as defined). The use temperature for efficient cleaning while using the composition extends over a broad range up to at least 140.degree. F. in the absence of deleterious foaming even in the presence of protein soil (e.g., egg and/or milk soil).
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: May 21, 1996
    Assignee: BASF Corporation
    Inventors: Michael C. Welch, Kenneth L. Zack, Suzanne M. Gessner, Glenis Roberts
  • Patent number: 5516452
    Abstract: An aqueous rinse-aid composition for kitchen utensils is provided wherein an anionic hydrotrope and a blend of two specifically defined nonionic surfactants are utilized which has been shown through empirical research to surprisingly yield improved results. One of the nonionic surfactants is an alcohol alkoxylate (as defined) and the other nonionic surfactant is a block copolymer of ethylene oxide and propylene oxide (as defined). The composition is suitable for use at a temperature of up to at least 180.degree. F. in the absence of excessive foaming, spotting and film formation. The components of the composition exhibit good compatibility during storage even if elevated temperatures are experienced thereby maintaining reliable performance upon usage. Rapid high velocity rinsing at a high temperature is made possible in the absence of deleterious foam generation to yield dishes and tableware that can be readily dried without the need for the time consuming hand removal of deleterious spots and/or film.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: May 14, 1996
    Assignee: BASF Corporation
    Inventors: Michael C. Welch, Kenneth L. Zack, Suzanne M. Gessner, Glenis Roberts