Patents Assigned to Questech Corporation
  • Patent number: 11739234
    Abstract: Disclosed is a two-part composition for sealing natural stone or masonry, and methods of use. The two-part composition is comprised of (1) a first part comprising a polyvinylidene fluoride (PVDF) particulate; a low evaporation rate organic solvent; and water; and (2) a second part comprising a blend of a plurality of liquid resin formulations.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: August 29, 2023
    Assignee: Questech Corporation
    Inventors: Barry Culkin, Roger Questel, Robert Harrington, Douglas Croteau, Paul Thottathil, Purushoth Kesavan, John Ryan, Satyabrata Mukherjee
  • Publication number: 20210253890
    Abstract: Disclosed is a two-part composition for sealing natural stone or masonry, and methods of use. The two-part composition is comprised of (1) a first part comprising a polyvinylidene fluoride (PVDF) particulate; a low evaporation rate organic solvent; and water; and (2) a second part comprising a blend of a plurality of liquid resin formulations.
    Type: Application
    Filed: February 2, 2021
    Publication date: August 19, 2021
    Applicant: Questech Corporation
    Inventors: Barry Culkin, Roger Questel, Robert Harrington, Douglas Croteau, Paul Thottathil, Purushoth Kesavan, John Ryan, Satyabrata Mukherjee
  • Patent number: 10532956
    Abstract: This invention relates to polymeric compositions for application onto natural stone in order to provide for long-term chemical, stain, and water resistance, along with antimicrobial properties. Many natural, unsealed stones do not have stain, etch, or water resistance. The described compositions were developed using a technology of chemical grafting that involves the use of prepolymers, monomers, catalysts, graft initiators, wetting agents, antimicrobial agents, and other ingredients. The composition, when thus applied to the stone surface allows it to obtain a graft polymerization, thereby forming a polymer film that is chemically attached to the natural stone, rather than typical physical bonding of other sealer compositions. The natural stones react with a graft initiator in the composition, which creates the reaction sites on the natural stone surface via free radical mechanisms.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: January 14, 2020
    Assignee: Questech Corporation
    Inventors: Barry Culkin, Roger Questel, Robert Harrington, Douglas Croteau, Paul Thottathil, Purushoth Kesavan, John Ryan, Satyabrata Mukherjee
  • Publication number: 20190047916
    Abstract: This invention relates to polymeric compositions for application onto natural stone in order to provide for long-term chemical, stain, and water resistance, along with antimicrobial properties. Many natural, unsealed stones do not have stain, etch, or water resistance. The described compositions were developed using a technology of chemical grafting that involves the use of prepolymers, monomers, catalysts, graft initiators, wetting agents, antimicrobial agents, and other ingredients. The composition, when thus applied to the stone surface allows it to obtain a graft polymerization, thereby forming a polymer film that is chemically attached to the natural stone, rather than typical physical bonding of other sealer compositions. The natural stones react with a graft initiator in the composition, which creates the reaction sites on the natural stone surface via free radical mechanisms.
    Type: Application
    Filed: August 11, 2017
    Publication date: February 14, 2019
    Applicant: Questech Corporation
    Inventors: Barry Culkin, Roger Questel, Robert Harrington, Douglas Croteau, Paul Thottathil, Purushoth Kesavan, John Ryan, Satyabrata Mukherjee
  • Publication number: 20180061590
    Abstract: The present invention is directed towards a spacer or spacing device designed to hold an electrical switch or outlet cover plate a desired distance from a mounting surface such as a wall.
    Type: Application
    Filed: August 28, 2017
    Publication date: March 1, 2018
    Applicant: Questech Corporation
    Inventor: Roger Questel
  • Patent number: 8999507
    Abstract: The invention relates to a process for applying a liquid UV-curable primer sealant to natural stone tiles and related articles followed immediately by the exposure to a requisite amount of low intensity UVA-type UV radiation to partially cure the primer sealant. The partial curing, or pre-setting, of the primer sealant enables control of the ultimate depth of penetration of the primer sealer into the natural stone tiles and natural stone articles of which many examples are quite porous. Because the low level UV irradiation is instantaneous after the primer sealant application the level of primer sealant penetration into the natural stone surface is regulated. The pre-curing of the primer sealant is conducted to intentionally solidify or immobilize the sealant that has actually penetrated into the natural stone surface. The uppermost layers of the primer sealant are left in a semi-liquid or uncured state to allow for wetting and intermingling by the top sealant once it is applied.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: April 7, 2015
    Assignee: Questech Corporation
    Inventors: David Pelletier, Roger Questel, Larry Wasowski, Dorian C. Guptill
  • Patent number: 8323749
    Abstract: The invention relates to a process for applying a liquid UV-curable primer sealant to natural stone tiles and related articles followed immediately by the exposure to a requisite amount of low intensity UVA-type UV radiation to partially cure the primer sealant. The partial curing, or pre-setting, of the primer sealant enables control of the ultimate depth of penetration of the primer sealer into the natural stone tiles and natural stone articles of which many examples are quite porous. Because the low level UV irradiation is instantaneous after the primer sealant application the level of primer sealant penetration into the natural stone surface is regulated. The pre-curing of the primer sealant is conducted to intentionally solidify or immobilize the sealant that has actually penetrated into the natural stone surface. The uppermost layers of the primer sealant are left in a semi-liquid or uncured state to allow for wetting and intermingling by the top sealant once it is applied.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: December 4, 2012
    Assignee: Questech Corporation
    Inventors: Roger Questel, Larry Wasowski, Dorian C. Guptill, David Pelletier
  • Publication number: 20060260248
    Abstract: Disclosed herein is a paneling system including a first and a second span element each possessing a substantially non-rectangular lateral cross-section and at least one butt end having a surface substantially perpendicular to a longitudinal axis of the span element. The paneling system also includes a transition element having a first end defining a first coping profile, the first coping profile being mateable to the butt end of a first span element at substantially a right angle, and a second end defining a second coping profile, the second coping profile being mateable to the butt end of a second span element at substantially a right angle. Also disclosed is a method of installing a paneling system that includes arranging transition and span elements to mate and form miterless corners.
    Type: Application
    Filed: May 20, 2005
    Publication date: November 23, 2006
    Applicant: Questech Corporation
    Inventor: Roger Questel
  • Patent number: D688935
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: September 3, 2013
    Assignee: Questech Corporation
    Inventors: Roger Questel, Douglas J. Croteau
  • Patent number: D732375
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: June 23, 2015
    Assignee: Questech Corporation
    Inventors: Roger Questel, Douglas J. Croteau
  • Patent number: D823616
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: July 24, 2018
    Assignee: Questech Corporation
    Inventor: Roger Questel