Patents by Inventor Shahin Keller

Shahin Keller 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: 8653015
    Abstract: A solvent blend cleaner useful for reflux cleaning of chemical manufacturing equipment, including that used in manufacturing pharmaceuticals, comprises a blend of environmentally friendly and safe solvents selected on the basis of specific criteria, such as vapor pressure, vapor density, boiling point, specific heat, and heat of vaporization, among other things; achieves excellent cleaning even upon further dilution with water; and avoids the disadvantages associated with the use of conventional commodity solvents in reflux cleaning methods. Desired solvency, cleaning and wetting properties of the inventive formulations in use can be achieved through blending of solvents having the selected criteria. Additives, such as surfactants, can be added to enhance cleaning and lower solvent requirements.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: February 18, 2014
    Assignee: American Sterilizer Company
    Inventors: Shahin Shahin Keller, Nancy E. Kaiser
  • Publication number: 20120264673
    Abstract: A solvent blend cleaner useful for reflux cleaning of chemical manufacturing equipment, including that used in manufacturing pharmaceuticals, comprises a blend of environmentally friendly and safe solvents selected on the basis of specific criteria, such as vapor pressure, vapor density, boiling point, specific heat, and heat of vaporization, among other things; achieves excellent cleaning even upon further dilution with water; and avoids the disadvantages associated with the use of conventional commodity solvents in reflux cleaning methods. Desired solvency, cleaning and wetting properties of the inventive formulations in use can be achieved through blending of solvents having the selected criteria. Additives, such as surfactants, can be added to enhance cleaning and lower solvent requirements.
    Type: Application
    Filed: April 13, 2011
    Publication date: October 18, 2012
    Applicant: AMERICAN STERILIZER COMPANY
    Inventors: Shahin Keller, Nancy E. Kaiser
  • Patent number: 7838485
    Abstract: An aqueous, alkaline cleaning composition for use on hard-to-clean soils, encountered in pharmaceutical, personal care, food and cosmetic manufacturing, comprising a source of alkalinity, a biodegradable surfactant system further comprising one or more surfactants, one or more hydrotropes, and a UV-analyzable surfactant, and a biodegradable chelating agent. The composition offers unique advantages of stability over the expected shelf life, low-foaming property, phosphate-free and biodegradable components, and unexpectedly enhanced antimicrobial, including virucidal, activity in one cleaning composition. The UV-analyzable surfactant allows for validation of cleaning processes using known techniques for manufacturers who are required or desire to do so.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: November 23, 2010
    Assignee: American Sterilizer Company
    Inventors: Christopher C. Heisig, Shahin Keller, John Macauley, Gurusamy Manivannan, Daniel Klein, Michael Ebers
  • Publication number: 20080221006
    Abstract: An aqueous, alkaline cleaning composition for use on hard-to-clean soils, encountered in pharmaceutical, personal care, food and cosmetic manufacturing, comprising a source of alkalinity, a biodegradable surfactant system further comprising one or more surfactants, one or more hydrotropes, and a UV-analyzable surfactant, and a biodegradable chelating agent. The composition offers unique advantages of stability over the expected shelf life, low-foaming property, phosphate-free and biodegradable components, and unexpectedly enhanced antimicrobial, including virucidal, activity in one cleaning composition. The UV-analyzable surfactant allows for validation of cleaning processes using known techniques for manufacturers who are required or desire to do so.
    Type: Application
    Filed: March 8, 2007
    Publication date: September 11, 2008
    Inventors: Christopher C. Heisig, Shahin Keller, John Macauley, Gurusamy Manivannan, Daniel Klein, Michael Ebers
  • Patent number: 7144846
    Abstract: A low pH disinfectant composition comprises an aqueous composition of a phenolic compound, an organic acid, and/or a dispersing surfactant and/or solvent. The disinfectant solution can be concentrated, or more preferably diluted ready to use, and is very effective in eradicating fungi including Aspergillus niger.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: December 5, 2006
    Assignee: Steris, Inc.
    Inventors: Shahin Keller, Herbert J. Kaiser, Jason F. Tirey, Daniel A. Klein, Nancy E. Kaiser
  • Publication number: 20050256018
    Abstract: A low pH disinfectant composition comprises an aqueous composition of a phenolic compound, an organic acid, and/or a dispersing surfactant and/or solvent. The disinfectant solution can be concentrated, or more preferably diluted ready to use, and is very effective in eradicating fungi including Aspergillus niger.
    Type: Application
    Filed: May 11, 2004
    Publication date: November 17, 2005
    Inventors: Shahin Keller, Herbert Kaiser, Jason Tirey, Daniel Klein, Nancy E. Kaiser
  • Publication number: 20050032913
    Abstract: A method of decontaminating a surface or liquid which is contaminated with prions includes treating the surface with a composition which includes one or more phenol. Phenols which are particularly effective include p-chloro-m-xylanol, thymol, triclosan, 4-chloro, 3-methylphenol, pentachlorophenol, hexachlorophene, 2,2-methyl-bis(4-chlorophenol), and p-phenylphenol.
    Type: Application
    Filed: August 8, 2003
    Publication date: February 10, 2005
    Inventors: Gerald McDonnell, Herbert Kaiser, Kathleen Antloga, Shahin Keller
  • Patent number: 6632290
    Abstract: A cleaning composition includes a detectable substance which is relatively stable in the cleaning composition, for indicating whether the cleaning composition has been thoroughly removed from a vessel following a cleaning process. For pharmaceutical applications, the detectable substance is preferably a low-foaming surfactant that is detectable by high performance liquid chromatography at concentrations of around 10 ppm, or less. The surfactant is thus detectable in the same analytical procedure as are traces of pharmaceutical residues which have not been removed from the vessel. The analytical procedure is used to develop a cleaning protocol for future cleaning processes by determining the number of rinses needed for reducing the surfactant, and hence the cleaning product, and also the pharmaceutical residues, in the rinse water to predetermined acceptable levels.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: October 14, 2003
    Assignee: Steris Inc.
    Inventors: Sayed Sadiq Shah, Herb J. Kaiser, Shahin Keller
  • Patent number: 6387858
    Abstract: A method for treating medical instruments after a surgical procedure, which leaves blood or other body fluid on the instrument, includes applying a gel composition that inhibits the fluid from drying on the instruments. The gel composition is preferably a low viscosity gel exhibiting both sufficient flow and coating characteristics. The viscosity is preferably from about 700 to about 4,000 centipoise (cps), preferably around 3,000 cps. Applying a gel to post-surgical medical instruments contains and keeps protein containing fluids moist for extended periods of time and facilitates subsequent transportation, cleaning, and sterilization of such instruments.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: May 14, 2002
    Assignee: Steris Inc.
    Inventors: Sayed S. Shah, Shahin Keller, Mildred R. Bernando
  • Patent number: 6232280
    Abstract: A cleaning composition includes a detectable substance which is relatively stable in the cleaning composition, for indicating whether the cleaning composition has been thoroughly removed from a vessel following a cleaning process. For pharmaceutical applications, the detectable substance is preferably a low-foaming surfactant that is detectable by high performance liquid chromatography at concentrations of around 10 ppm, or less. The surfactant is thus detectable in the same analytical procedure as are traces of pharmaceutical residues which have not been removed from the vessel. The analytical procedure is used to develop a cleaning protocol for future cleaning processes by determining the number of rinses needed for reducing the surfactant, and hence the cleaning product, and also the pharmaceutical residues, in the rinse water to predetermined acceptable levels.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: May 15, 2001
    Assignee: Steris Corporation
    Inventors: Sayed Sadiq Shah, Herb J. Kaiser, Shahin Keller