Atco (American Tar)

Documents in our library describe Atco (American Tar) as “refined coal tar, [ cold dip tar, ] tar and creosote, bitumen primer, coal tar pitch, liquid fibre seal, plastic fibre seal, carbon elastic roof coating, asphalt fibre coating, asphalt fibre cement, siding asphalt fibre cement, asphalt roof coating, liquid roofing compound, liquid asbestos roofing compound, asphalt lap cement, roof coating primer, concrete koat (a waterproofing coat for application to concrete), concrete primer [, coal tar roofing felt, and tarred sheathing ]”.¹ They give it as sold from 1922.¹

What each document says

Every statement about Atco (American Tar) 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 1922-03-01”, said by American Tar Company, as recorded by U.S. Patent and Trademark Office¹
• Sold from: “first used in commerce 1922-03-01”, said by AMERICAN TAR COMPANY, as recorded by U.S. Patent and Trademark Office¹
• Sold from: “first used in commerce 1922-03-01”, said by AMERICAN TAR COMPANY, as recorded by U.S. Patent and Trademark Office¹
• Description: “Refined Coal Tar, [ Cold Dip Tar, ] Tar and Creosote, Bitumen Primer, Coal Tar Pitch, Liquid Fibre Seal, Plastic Fibre Seal, Carbon Elastic Roof Coating, Asphalt Fibre Coating, Asphalt Fibre Cement, Siding Asphalt Fibre Cement, Asphalt Roof Coating, Liquid Roofing Compound, Liquid Asbestos Roofing Compound, Asphalt Lap Cement, Roof Coating Primer, Concrete Koat (a Waterproofing Coat for Application to Concrete), Concrete Primer [, Coal Tar Roofing Felt, and Tarred Sheathing ]”, said by American Tar Company, as recorded by U.S. Patent and Trademark Office¹
• Description: “TAR AND CREOSOTE, LIQUID FIBRE SEAL, PLASTIC FIBRE SEAL, ASPHALT LAP CEMENT, ASPHALT ASBESTOS FIBRE CEMENT, WET SURFACE PLASTIC CEMENT, COLD APPLICATION CEMENT HAVING AN ASPHALT BASE FOR CEMENTING ROOFING PLIES, CONCRETE AND ROOF PRIMER FOR RESATURATING DRIED SURFACES BENEATH ROOF COATING, ASPHALT EMULSION, FIBRATED ASPHALT EMULSION, ROOFING ASPHALT, COAL TAR ROOFING FELT, ASPHALT ROOFING FELT, ASPHALT KRAFT SHEATHING, ASPHALT SHEATING AND GREY ROSIN SHEATHING”, said by AMERICAN TAR COMPANY, as recorded by U.S. Patent and Trademark Office¹
• Description: “ROOF COATING PRIMER, GILSONITE-ASPHALT PAINT, CARBON ELASTIC PAINT, STACK AND BOILER PAINT, ASPHALT ROOF COATING, ASPHALT ASBESTOS FIBRE COATING, AND CONCRETE COATING”, said by AMERICAN TAR COMPANY, as recorded by U.S. Patent and Trademark Office¹

Kind of product

We list Atco (American Tar) with asbestos-cement pipe, board and sheet 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: Boilermakers, Carpenters and Construction Workers, Roofers.

References

1. USPTO trademark case files (Trademark Full Text XML Data, Annual Applications, 2025 edition) (January 24, 1942). Not yet published in our library.