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P. Yates received US Patent No. 3,718,491 on February 27, 1973, filed February 19, 1971. It was assigned to EI Du Pont de Nemours and Co.
The patent's abstract:
Water resistant silicate-perlite insulation materials are made by mixing an aqueous solution of an alkaline ionic silicate and a colloidal amorphous silica sol, adding perlite to said mixture, molding the combined mixture into the desired shape and exposing said shaped article to an acidic substance to set the article rapidly and provide immediate water resistance.
- Author
- P. Yates
- Published by
- US Patent Office
- Series
- US Patent No. 3,718,491
- Date
- February 27, 1973
- Library no.
- ACL Doc 23446 · asbestosclaims.law/library/23446
- Rights
- US government work, in the public domain.
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Where it was listed
- Barry Castleman, Asbestos: Medical and Legal Aspects (5th edition, 2005)
Cited by Barry Castleman
In Asbestos: Medical and Legal Aspects (5th edition, 2005), which cites it in:
- Chapter 6 (Alternatives to Asbestos Insulation), p. 382, note 96
Cited on this site
Cite this document
P. Yates. “Process for silicate-perlite structures (US Patent 3,718,491, 1973).” February 27, 1973. US Patent No. 3,718,491. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23446. https://asbestosclaims.law/library/23446.
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