US PATENT SUBCLASS 106 / 786
.~.~.~ By-product gypsum (e.g., phosphogypsum, etc.)

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
638  DF  .~ Inorganic settable ingredient containing {30}
772  DF  .~.~ Calcium sulfate (e.g., gypsum, anhydrite, plaster of Paris, etc.) {10}
786.~.~.~ By-product gypsum (e.g., phosphogypsum, etc.)

DEFINITION

Classification: 106/786

By-product gypsum (e.g., phosphogypsum, etc.):

(under subclass 772) Subject matter employing by-product gypsum, e.g., phosphogypsum, etc.

(1) Note. By-product gypsum is simply gypsum indicated to have been derived as a by-product of another process.