US PATENT SUBCLASS 521 / 104
.~.~.~.~ Boron trihalide or complex thereof

Current as of: June, 1999
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521 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {3}
50  DF  .~ CELLULAR PRODUCTS OR PROCESSES OF PREPARING A CELLULAR PRODUCT, E.G., FOAMS, PORES, CHANNELS, ETC. {27}
99  DF  .~.~ Cellular product formation prior to or during solid polymer formation in the presence of a stated ingredient other than water {18}
103  DF  .~.~.~ Ingredient contains a boron atom {2}
104.~.~.~.~ Boron trihalide or complex thereof

DEFINITION

Classification: 521/104

Boron trihalide or complex thereof:

(under subclass 103) Subject matter wherein the stated ingredient is boron trihalide or is an organic or inorganic complex thereof.

(1) Note. The halogen atoms may be the same as in boron trichloride, or they may be different.