Patents by Inventor Robert Zhong Lu

Robert Zhong Lu 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: 6930081
    Abstract: Aqueous disinfecting and cleaning compositions and concentrates which are efficacious against gram positive and gram negative bacteria, have relatively low volatile organic content (“VOC”) and are surprisingly mild to the user of the compositions. The compositions include a quaternary ammonium compound as its primary germicidal active agent, have a low content of active constituents, and do not include organic solvents such as alcohols, glycols, or glycol ethers in significant amounts.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: August 16, 2005
    Assignee: Reckitt Benckiser Inc.
    Inventors: Robert Zhong Lu, Dennis Thomas Smialowicz, Ralph Edward Rypkema, Karen Ann McCue, Andrew Arno Kloeppel, Diane Joyce Burt, Michael David Love, Robert William Bogart, Narendra Vrajlal Nanavati, Frederic Albert Taraschi
  • Patent number: 6268327
    Abstract: Aqueous disinfecting and cleaning compositions and concentrates which are efficacious against gram positive and gram negative bacteria, have relatively low volatile organic content (“VOC”) and are surprisingly mild to the user of the compositions. The compositions include a quaternary ammonium compound as its primary germicidal active agent, have a low content of active constituents, and do not include organic solvents such as alcohols, glycols, or glycol ethers in significant amounts.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: July 31, 2001
    Assignee: Reckitt Benckiser Inc.
    Inventors: Robert Zhong Lu, Dennis Thomas Smialowicz, Ralph Edward Rypkema, Karen Ann McCue, Andrew Arno Kloeppel, Diane Joyce Burt, Michael David Love, Robert William Bogart, Narendra Vrajlal Nanavati, Frederic Albert Taraschi
  • Patent number: 6221823
    Abstract: Improved hard surface cleaning compositions having an acidic pH provide good removal of soap scum stains, and further feature low levels of irritability to the user. The compositions comprise 0.1-10% by weight of an acid sequestrant constituent; 0.1-10% by weight of a mixture of hydrophobic and hydrophilic solvents; 1-8% by weight of a surfactant and/or hydrotrope constituent; 0-20% by weight of one or more optional constituents; the balance to 100% by weight, water wherein the aqueous hard surface cleaning composition exhibits a pH of 7.0 or less, especially a pH of 5.0 and less. Although acidic, the improved hard surface cleaning compositions feature low irritability to the eyes and skin of consumers. The compositions also provide disinfecting effects. Processes for the production of the said compositions, as well as methods for their use are also described.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: April 24, 2001
    Assignee: Reckitt Benckiser Inc.
    Inventors: Michael George Crisanti, Robert Zhong Lu, Robert Paul Manzo, Gary Peter Kline
  • Patent number: 6143710
    Abstract: Aqueous disinfecting and cleaning compositions and concentrates which are efficacious against gram positive and gram negative bacteria, have relatively low volatile organic content ("VOC") and are surprisingly mild to the user of the compositions. The compositions include a quaternary ammonium compound as its primary germicidal active agent, have a low content of active constituents, and do not include organic solvents such as alcohols, glycols, or glycol ethers in significant amounts.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: November 7, 2000
    Assignee: Reckitt Benckiser Inc.
    Inventors: Robert Zhong Lu, Dennis Thomas Smialowicz, Ralph Edward Rypkema, Karen Ann McCue, Andrew Arno Kloeppel, Diane Joyce Burt, Michael David Love, Robert William Bogart, Narendra Vrajlal Nanavati, Frederic Albert Taraschi
  • Patent number: 6110295
    Abstract: A blooming type, germicidal hard surface cleaning and disinfecting concentrate compositions according to the invention comprise the following constituents:0.1-10% wt. of a terpene containing solvent which desirably includes both pine oil and d-limonene;0.1-12% wt. of at least one organic solvent;0.1-20% wt. at least one non-ionic surfactant constituent which desirably includes at least one nonionic surfactant having an HLB of greater than or equal to 10, and at least one nonionic surfactant having an HLB value of less than or equal to 8;a bloom enhancing effective amount at least one amphoteric surfactant selected from alkylampho(mono)- and (di)-acetates, alkylampho(mono)- and (di)-propionates, and aminopropionates;optionally a further nonionic surfactant based on a C.sub.8 -C.sub.18 primary alcohol ethoxylate which exhibits a cloud point of 20.degree. C. in water;a germicidally effective amount of at least one cationic surfactant having germicidal properties; andthe balance, to 100% wt. of water.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: August 29, 2000
    Assignee: Reckitt Benckiser Inc.
    Inventors: Robert Zhong Lu, Andrew Arno Kloeppel
  • Patent number: 6066606
    Abstract: The blooming type, hard surface cleaning concentrate compositions according to the invention comprise the following constituents:0.1-10% wt. of a terpene containing solvent which desirably includes both pine oil and d-limonene;0.1-12% wt. of at least one organic solvent other than a terpene containing solvent constituent;0.1-20% wt. of a nonionic surfactant system which includes both at least one non-ionic surfactant constituent which desirably includes at least one nonionic surfactant having an HLB of greater than or equal to 10, and at least one nonionic surfactant based on a C.sub.8 -C.sub.18 primary alcohol ethoxylate which exhibits a cloud point of about 20.degree. C. or less in water;a bloom enhancing effective amount at least one amphoteric surfactant selected from alkylampho(mono)- and (di)-acetates, as well as alkylampho(mono)- and (di)-propionates, and aminopropionates;and the balance, to 100% wt. of water.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: May 23, 2000
    Assignee: Reckitt & Colman Inc.
    Inventors: Robert Zhong Lu, Andrew Arno Kloeppel
  • Patent number: 6030936
    Abstract: A blooming type, germicidal hard surface cleaning and disinfecting concentrate compositions according to the invention comprise the following constituents:0.1-10% wt. of a terpene containing solvent which desirably includes both pine oil and d-limonene;0.1-12% wt. of at least one organic solvent;0.1-20% wt. at least one non-ionic surfactant constituent which desirably includes at least one nonionic surfactant having an HLB of greater than or equal to 10, and at least one nonionic surfactant having an HLB value of less than or equal to 8;a bloom enhancing effective amount at least one amphoteric surfactant selected from alkylampho(mono)- and (di)-acetates, alkylampho(mono)- and (di)-propionates, and aminopropionates;optionally a further nonionic surfactant based on a C.sub.8 -C.sub.18 primary alcohol ethoxylate which exhibits a cloud point of 20.degree. C. in water;a germicidally effective amount of at least one cationic surfactant having germicidal properties; and,the balance, to 100% wt. of water.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: February 29, 2000
    Assignee: Reckitt & Colman Inc.
    Inventors: Robert Zhong Lu, Andrew Arno Kloeppel
  • Patent number: 6022841
    Abstract: Aqueous disinfecting and cleaning compositions and concentrates which are efficacious against gram positive and gram negative bacteria, have relatively low volatile organic content ("VOC") and are surprisingly mild to the user of the compositions. The compositions include a quaternary ammonium compound as its primary germicidal active agent, have a low content of active constituents, and do not include organic solvents such as alcohols, glycols, or glycol ethers in significant amounts.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: February 8, 2000
    Assignee: Reckitt & Colman Inc.
    Inventors: Robert Zhong Lu, Dennis Thomas Smialowicz, Ralph Edward Rypkema, Karen Ann McCue, Andrew Arno Kloeppel, Diane Joyce Burt, Michael David Love, Robert William Bogart, Narendra Vrajlal Nanavati, Frederic Albert Taraschi
  • Patent number: 6017869
    Abstract: Aqueous disinfecting and cleaning compositions and concentrates which are efficacious against gram positive and gram negative bacteria, have relatively low volatile organic content ("VOC") and are surprisingly mild to the user of the compositions. The compositions include a quaternary ammonium compound as its primary germicidal active agent, and have a low content of active constituents.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: January 25, 2000
    Assignee: Reckitt & Colman Inc.
    Inventors: Robert Zhong Lu, Dennis Thomas Smialowicz, Ralph Edward Rypkema, Karen Ann McCue, Andrew Arno Kloeppel, Diane Joyce Burt, Michael David Love, Robert William Bogart, Narendra Vrajlal Nanavati, Frederic Albert Taraschi
  • Patent number: 5985819
    Abstract: Pine oil type concentrate compositions and cleaning compositions providing sanitizing effects comprise a germicidal active cationic surfactant, a co-solvent, a non-ionic surfactant system, and generally include a relatively high amount of fragrance and/or fragrance adjuvant compositions. The preferred embodiments of the pine oil type cleaning compositions provide the benefits of good cleaning, effective sanitizing action, good blooming upon addition to an excess of water and long lasting fragrance, and low irritancy levels notwithstanding the relatively high levels of organic solvents comprised in the compositions.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: November 16, 1999
    Assignee: Reckitt & Colman Inc.
    Inventors: Robert Zhong Lu, Dennis Thomas Smialowicz
  • Patent number: 5700768
    Abstract: Improved floor cleaning compositions featuring low residue/film formation, methods for their production and processes for their use are disclosed. The compositions are aqueous floor cleaning compositions comprising a non-ionic surfacant having an average molecular weight of about 2,000 and greater, a clarifying effective amount of an amphoteric solubilizer, and an anionic low foaming surfactant. Further optional constituents may also be included.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: December 23, 1997
    Assignee: Reckitt & Colman Inc.
    Inventor: Robert Zhong Lu