Patents by Inventor Donald Lapham

Donald Lapham 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).

  • Publication number: 20180271090
    Abstract: A method of sterilizing a material, said method comprising the steps of: a) providing a sterilizing composition comprising (i) peracetic acid and (ii) a stabilizer selected from the group consisting of citric acid, isocitric acid, aconitic acid and propane-1,2,3-tricarboxylic acid; b) introducing such sterilizing composition into a hot gaseous stream to produce a peracetic acid vapor; and c) contacting such peracetic acid vapor with the material to be sterilized. The use of such an organic acid stabilizer results in an unexpected reduction in the amount of residue deposited on the heating surface employed to vaporize the sterilizing composition.
    Type: Application
    Filed: May 31, 2018
    Publication date: September 27, 2018
    Applicant: PeroxyChem LLC
    Inventors: John M. ROVISON, Ricky MITTIGA, Donald LAPHAM, Weidong AN
  • Patent number: 9986737
    Abstract: A method of sterilizing a material, said method comprising the steps of: a) providing a sterilizing composition comprising (i) peracetic acid and (ii) a stabilizer selected from the group consisting of citric acid, isocitric acid, aconitic acid and propane-1,2,3-tricarboxylic acid; b) introducing such sterilizing composition into a hot gaseous stream to produce a peracetic acid vapor; and c) contacting such peracetic acid vapor with the material to be sterilized. The use of such an organic acid stabilizer results in an unexpected reduction in the amount of residue deposited on the heating surface employed to vaporize the sterilizing composition.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: June 5, 2018
    Assignee: PEROXYCHEM LLC
    Inventors: John M. Rovison, Ricky Mittiga, Donald Lapham, Weidong An
  • Publication number: 20160345576
    Abstract: The invention relates to anti-microbial compositons useful against a wide range of microoganisms undesirable on a wide variety of materials, including food, food contact and non-food contact surfaces, and surfaces in industrial, recreational, health care, and other institutional environments. More particularly, the anit-microbial compositions comprise peracetic acid in combination with a)citric acid or a salt and b) salicyclic acid or a slat in aqueous solution.
    Type: Application
    Filed: May 31, 2016
    Publication date: December 1, 2016
    Applicant: PeroxyChem LLC
    Inventors: John M. Rovison, Donald Lapham, Shibu Abraham, Mary Homan
  • Publication number: 20160183522
    Abstract: A method of sterilizing a material, said method comprising the steps of: a) providing a sterilizing composition comprising (i) peracetic acid and (ii) a stabilizer selected from the group consisting of citric acid, isocitric acid, aconitic acid and propane-1,2,3-tricarboxylic acid; b) introducing such sterilizing composition into a hot gaseous stream to produce a peracetic acid vapor; and c) contacting such peracetic acid vapor with the material to be sterilized. The use of such an organic acid stabilizer results in an unexpected reduction in the amount of residue deposited on the heating surface employed to vaporize the sterilizing composition.
    Type: Application
    Filed: March 4, 2016
    Publication date: June 30, 2016
    Applicant: PeroxyChem LLC
    Inventors: John M. ROVISON, Ricky MITTIGA, Donald LAPHAM, Weidong AN
  • Patent number: 9351488
    Abstract: The invention relates to anti-microbial compositions useful against a wide range of microorganisms undesirable on a wide variety of materials, including food, food contact and non-food contact surfaces, and surfaces in industrial, recreational, health care, and other institutional environments. More particularly, the anti-microbial compositions comprise peracetic acid in combination with a) citric acid or a salt and b) salicylic acid or a salt in aqueous solution.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: May 31, 2016
    Assignee: PEROXYCHEM LLC
    Inventors: John M. Rovison, Donald Lapham, Shibu Abraham, Mary Homan
  • Patent number: 9295744
    Abstract: A method of sterilizing a material, said method comprising the steps of: a) providing a sterilizing composition comprising (i) peracetic acid and (ii) a stabilizer selected from the group consisting of citric acid, isocitric acid, aconitic acid and propane-1,2,3-tricarboxylic acid; b) introducing such sterilizing composition into a hot gaseous stream to produce a peracetic acid vapor; and c) contacting such peracetic acid vapor with the material to be sterilized. The use of such an organic acid stabilizer results in an unexpected reduction in the amount of residue deposited on the heating surface employed to vaporize the sterilizing composition.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: March 29, 2016
    Assignee: PEROXYCHEM LLC
    Inventors: John M. Rovison, Ricky Mittiga, Donald Lapham, Weidong An
  • Publication number: 20150037209
    Abstract: A method of sterilizing a material, said method comprising the steps of: a) providing a sterilizing composition comprising (i) peracetic acid and (ii) a stabilizer selected from the group consisting of citric acid, isocitric acid, aconitic acid and propane-1,2,3-tricarboxylic acid; b) introducing such sterilizing composition into a hot gaseous stream to produce a peracetic acid vapor; and c) contacting such peracetic acid vapor with the material to be sterilized. The use of such an organic acid stabilizer results in an unexpected reduction in the amount of residue deposited on the heating surface employed to vaporize the sterilizing composition.
    Type: Application
    Filed: October 21, 2014
    Publication date: February 5, 2015
    Inventors: John M. ROVISON, Ricky MITTIGA, Donald LAPHAM, Weidong AN
  • Patent number: 8865066
    Abstract: A method of sterilizing a material, said method comprising the steps of: a) providing a sterilizing composition comprising (i) peracetic acid and (ii) a stabilizer selected from the group consisting of citric acid, isocitric acid, aconitic acid and propane-1,2,3-tricarboxylic acid; b) introducing such sterilizing composition into a hot gaseous stream to produce a peracetic acid vapor; and c) contacting such peracetic acid vapor with the material to be sterilized. The use of such an organic acid stabilizer results in an unexpected reduction in the amount of residue deposited on the heating surface employed to vaporize the sterilizing composition.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: October 21, 2014
    Assignee: PeroxyChem LLC
    Inventors: John M. Rovison, Ricky Mittiga, Donald Lapham, Weidong An
  • Publication number: 20140228328
    Abstract: The invention relates to anti-microbial compositions useful against a wide range of microorganisms undesirable on a wide variety of materials, including food, food contact and non-food contact surfaces, and surfaces in industrial, recreational, health care, and other institutional environments. More particularly, the anti-microbial compositions comprise peracetic acid in combination with a) citric acid or a salt and b) salicylic acid or a salt in aqueous solution.
    Type: Application
    Filed: April 18, 2014
    Publication date: August 14, 2014
    Applicant: FMC Corporation
    Inventors: John M. ROVISON, Donald LAPHAM, Shibu ABRAHAM, Mary HOMAN
  • Publication number: 20130243650
    Abstract: A method of sterilizing a material, said method comprising the steps of: a) providing a sterilizing composition comprising (i) peracetic acid and (ii) a stabilizer selected from the group consisting of citric acid, isocitric acid, aconitic acid and propane-1,2,3-tricarboxylic acid; b) introducing such sterilizing composition into a hot gaseous stream to produce a peracetic acid vapor; and c) contacting such peracetic acid vapor with the material to be sterilized. The use of such an organic acid stabilizer results in an unexpected reduction in the amount of residue deposited on the heating surface employed to vaporize the sterilizing composition.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 19, 2013
    Applicant: FMC Corporation
    Inventors: John M. Rovison, Ricky Mittiga, Donald Lapham, Weidong An
  • Publication number: 20090312292
    Abstract: The invention relates to anti-microbial compositions useful against a wide range of microorganisms undesirable on a wide variety of materials, including food, food contact and non-food contact surfaces, and surfaces in industrial, recreational, health care, and other institutional environments. More particularly, the anti-microbial compositions comprise peracetic acid in combination with a) citric acid or a salt and b) salicylic acid or a salt in aqueous solution.
    Type: Application
    Filed: December 20, 2007
    Publication date: December 17, 2009
    Applicant: FMC CORPORATION
    Inventors: John M. Rovison, Donald Lapham, III, Shibu Abraham, Mary Homan
  • Patent number: 5501802
    Abstract: Persulfates are used to provide water clarity when organic sanitizers such as biguanides are utilized for sanitizing recreational waters. Persulfate applications of 2 ppm or more can be used. Additionally, maintenance applications of the persulfate or the bisulfate can be used.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: March 26, 1996
    Assignee: FMC Corporation
    Inventors: Dean S. Thorp, Frank E. Caropreso, Robert H. Tieckelmann, Donald Lapham, III