US PATENT SUBCLASS 148 / 265
.~.~.~.~ Post chromium treatment with specified material (other than mere air drying)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


148 /   HD   METAL TREATMENT

95  DF  PROCESS OF MODIFYING OR MAINTAINING INTERNAL PHYSICAL STRUCTURE (I.E., MICROSTRUCTURE) OR CHEMICAL PROPERTIES OF METAL, PROCESS OF REACTIVE COATING OF METAL AND PROCESS OF CHEMICAL-HEAT REMOVING (E.G., FLAME-CUTTING, ETC.) OR BURNING OF METAL {17}
240  DF  .~ Processes of coating utilizing a reactive composition which reacts with metal substrate or composition therefore {12}
243  DF  .~.~ Liquid reactive coating composition utilized {16}
264  DF  .~.~.~ Contains an atom of chromium {4}
265.~.~.~.~ Post chromium treatment with specified material (other than mere air drying)

DEFINITION

Classification: 148/265

Post chromium treatment with specified material (other than mere air drying):

(under subclass 264) Subject matter wherein the process includes a treatment with a specified composition subsequent to the treatment with the chromium containing composition and wherein said specified composition involves more than air, per se.

(1) Note. Specified, for purposes of this subclass, requires at least one chemical atom of the material to be identified in the claims. The term "organic" is not sufficient to be considered as "specified".

(2) Note. This subclass provides for processes and compositions wherein the actual step of chemically modifying the substrate with a chromium containing composition is not claimed and the claim is to the treating of a base which has already been reacted with a composition containing chromium.