Documents in our library describe Plisulate (Plibrico Jointless Firebrick) as “plastic and non-plastic heat insulating material, comprising insulating cement; insulating block comprising mineral wool [ asbestos fibre, ] and colloidal clay; insulating felt; insulating blankets; and insulating wool”.1 They give it as sold from 1938.1
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What each document says
Every statement about Plisulate (Plibrico Jointless Firebrick) in the documents, in each document's own words.
USPTO trademark case files (Trademark Full Text XML Data, Annual Applications, 2025 edition)
- Sold from: “first used in commerce 1938-07-14”, said by PLIBRICO JOINTLESS FIREBRICK COMPANY, as recorded by U.S. Patent and Trademark Office1
- Description: “PLASTIC AND NON-PLASTIC HEAT INSULATING MATERIAL, COMPRISING INSULATING CEMENT; INSULATING BLOCK COMPRISING MINERAL WOOL [ ASBESTOS FIBRE, ] AND COLLOIDAL CLAY; INSULATING FELT; INSULATING BLANKETS; AND INSULATING WOOL”, said by PLIBRICO JOINTLESS FIREBRICK COMPANY, as recorded by U.S. Patent and Trademark Office1
Kind of product
We list Plisulate (Plibrico Jointless Firebrick) with pipe covering and block insulation, insulating cement and coatings and paper, felt and millboard, from how the documents describe it. Those pages explain how such products exposed workers.
Trades that worked with products like it: Insulators and Insulation Workers, Pipefitters and Plumbers, Boilermakers.
Pipe covering and block insulation by other makers (276)
Thermobestos · Superex (Johns-Manville) · Careytemp (Philip Carey) · Kaylo (Owens-Corning) · Unibestos (Union Asbestos & Rubber Co.) · Norwal (Nicolet) · Pabco (Fibreboard) · Pabco Caltemp (Fibreboard) · Pabco Prasco (Fibreboard) · Pabco Super Caltemp (Fibreboard) · Perfection Pipe Covering (Johns-Manville) · Pipecoverings (U.S. Gypsum) · Prasco (Fibreboard) · Precision Molded Pipe Covering (Fibreboard) · Precision-molded (Ehret/Keene) · Precision-molded (Fibreboard) · Precision-molded (Mundet Cork) · Precision-molded (Philip Carey) · PV Supertemp Block (Eagle-Picher) · Pyro-bestos (U.S. Gypsum) · and 256 more: all pipe covering and block insulation
Insulating cement and coatings by other makers (324)
Thermobestos · Superex (Johns-Manville) · Asbestile (Johns-Manville) · 85 Magnesia (Johns-Manville) · Prasco (Fibreboard) · One Shot (Rock Wool Manufacturing Co.) · One-cote (Eagle-Picher) · P-k (Keene/Ehret) · Perforated Saffit Panels (Gold Bond Bldg. Products (National Gypsum)) · Permiseal (Combustion Engineering) · Pittcote 600 B (Pittsburgh Corning) · Plastic Emulsion (Armstrong Cork) · Powerhouse (Keene) · Protektite (Bitucote) · Pyroscat (Combustion Engineering) · Quik Set (Forty-Eight Insulations) · Red Top (U.S. Gypsum) · S-90 Tile (Armstrong Cork) · S.I.S. (Celotex) · Sal-mo (Nicolet) · and 304 more: all insulating cement and coatings
References
- USPTO trademark case files (Trademark Full Text XML Data, Annual Applications, 2025 edition) (February 21, 1948). Not yet published in our library.
Cite this page
“Plisulate (Plibrico Jointless Firebrick).” AsbestosClaims.Law Library. https://asbestosclaims.law/library/products/plibrico-jointless-firebrick-plisulate.
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