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Dietrich Bauer and Helmut Fratzscher received US Patent No. 3,668,119 on June 6, 1972, filed February 4, 1971.
The patent's abstract:
A colloidal solution of Chrysotile asbestos which is obtained from a pre-purified aqueous suspension of crude Chrysotile asbestos by means of a shearing action is subjected to filtration or centrifuging to eliminate therefrom incompletely separated colloidal matter. Subsequently, the asbestos is precipitated from the refined solution and subjected to further processing.
- Author
- Dietrich Bauer; Helmut Fratzscher
- Published by
- US Patent Office
- Series
- US Patent No. 3,668,119
- Date
- June 6, 1972
- Library no.
- ACL Doc 23434 · asbestosclaims.law/library/23434
- Rights
- US government work, in the public domain.
Read or download
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Where it was listed
- Asbestos, November 1972, in its patents department (the year's issues)
Cited on this site
Cite this document
Dietrich Bauer, Helmut Fratzscher. “Process for obtaining an asbestos-fiber material of a high degree of separation (US Patent 3,668,119, 1972).” June 6, 1972. US Patent No. 3,668,119. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23434. https://asbestosclaims.law/library/23434.
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