US PATENT SUBCLASS 435 / 70.2
.~.~ Fused or hybrid cells

Current as of: June, 1999
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435 /   HD   CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

41  DF  MICRO-ORGANISM, TISSUE CELL CULTURE OR ENZYME USING PROCESS TO SYNTHESIZE A DESIRED CHEMICAL COMPOUND OR COMPOSITION {26}
70.1  DF  .~ Using tissue cell culture to make a protein or polypeptide {2}
70.2.~.~ Fused or hybrid cells {1}
70.21  DF  .~.~.~> Producing monoclonal antibody

DEFINITION

Classification: 435/70.2

Fused or hybrid cells:

(under subclass 70.1) Processes wherein the product is synthesized by culture of fused or hybrid cells.

(1) Note. Fused or hybrid cells include those resulting from (a) the fusion of two cells, (b) the insertion of the nucleus or chromosone of one cell into another or (c) the treatment of a cell with an immortalizing agent which results in a cell which will proliferate in long-term culture.

(2) Note. Examples of the subject matter included in this and the indented subclass are use of lymphoblastoid hybridoma cells to produce peptide hormones (e.g., insulin, calcitonin, growth hormone, etc.) or monoclonal anti-bodies or use of cells transformed with a virus or oncogene to produce a cell line which will proliferate and produce proteins or polypeptides in long term culture.

SEE OR SEARCH THIS CLASS, SUBCLASS:

326+, for fused or hybrid animal cells, per se, which express immunoglobulin, antibody, or fragment thereof.

346, for fused or hybrid cell, per se.

373, through 403, for various processes of culturing animal cells. SEE OR SEARCH CLASS

530, Chemistry: Natural Resins or Derivatives Peptides or Proteins; Lignins or Reaction Products Thereof,

303, 307, 399, for the product produced by the processes of this subclass which includes insulin, calcitonin, and hormones.