Patents Assigned to Questech Corporation
-
Patent number: 11739234Abstract: 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: GrantFiled: February 2, 2021Date of Patent: August 29, 2023Assignee: Questech CorporationInventors: Barry Culkin, Roger Questel, Robert Harrington, Douglas Croteau, Paul Thottathil, Purushoth Kesavan, John Ryan, Satyabrata Mukherjee
-
Publication number: 20210253890Abstract: 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: ApplicationFiled: February 2, 2021Publication date: August 19, 2021Applicant: Questech CorporationInventors: Barry Culkin, Roger Questel, Robert Harrington, Douglas Croteau, Paul Thottathil, Purushoth Kesavan, John Ryan, Satyabrata Mukherjee
-
Patent number: 10532956Abstract: 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: GrantFiled: August 11, 2017Date of Patent: January 14, 2020Assignee: Questech CorporationInventors: Barry Culkin, Roger Questel, Robert Harrington, Douglas Croteau, Paul Thottathil, Purushoth Kesavan, John Ryan, Satyabrata Mukherjee
-
Publication number: 20190047916Abstract: 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: ApplicationFiled: August 11, 2017Publication date: February 14, 2019Applicant: Questech CorporationInventors: Barry Culkin, Roger Questel, Robert Harrington, Douglas Croteau, Paul Thottathil, Purushoth Kesavan, John Ryan, Satyabrata Mukherjee
-
Publication number: 20180061590Abstract: 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: ApplicationFiled: August 28, 2017Publication date: March 1, 2018Applicant: Questech CorporationInventor: Roger Questel
-
Patent number: 8999507Abstract: 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: GrantFiled: December 4, 2012Date of Patent: April 7, 2015Assignee: Questech CorporationInventors: David Pelletier, Roger Questel, Larry Wasowski, Dorian C. Guptill
-
Patent number: 8323749Abstract: 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: GrantFiled: January 29, 2009Date of Patent: December 4, 2012Assignee: Questech CorporationInventors: Roger Questel, Larry Wasowski, Dorian C. Guptill, David Pelletier
-
Publication number: 20060260248Abstract: 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: ApplicationFiled: May 20, 2005Publication date: November 23, 2006Applicant: Questech CorporationInventor: Roger Questel
-
Patent number: D688935Type: GrantFiled: October 31, 2011Date of Patent: September 3, 2013Assignee: Questech CorporationInventors: Roger Questel, Douglas J. Croteau
-
Patent number: D732375Type: GrantFiled: June 6, 2013Date of Patent: June 23, 2015Assignee: Questech CorporationInventors: Roger Questel, Douglas J. Croteau
-
Patent number: D823616Type: GrantFiled: May 10, 2017Date of Patent: July 24, 2018Assignee: Questech CorporationInventor: Roger Questel