US PATENT SUBCLASS 65 / 425
.~.~ Electromagnetic, magnetic, wave, or particulate energy utilized

Current as of: June, 1999
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65 /   HD   GLASS MANUFACTURING

376  DF  PROCESSES OF MANUFACTURING FIBERS, FILAMENTS, OR PREFORMS {18}
385  DF  .~ Process of manufacturing optical fibers, waveguides, or preforms thereof {29}
425.~.~ Electromagnetic, magnetic, wave, or particulate energy utilized

DEFINITION

Classification: 65/425

Electromagnetic, magnetic, wave, or particulate energy utilized:

(under subclass 385) Processes wherein electrical, magnetic, particulate, or electromagnetic wave energy is used during any stage of manufacturing or treating the optical fiber, waveguide, or preform.

(1) Note. The wave energy applied may be light, sonic, supersonic, ultrasonic, gamma rays, infrared rays, X-rays, etc. Particulate energy includes charged particles and atomic emissions, such as alpha rays, beta rays, and neutrons.

(2) Note. Patent documents claiming the use of electrostatic charge, field, or force to form an optical fiber, waveguide, or preform are properly classified herein.

(3) Note. Patent documents claiming the use of electric arc heating to form a glass fiber are properly classified herein.

SEE OR SEARCH THIS CLASS, SUBCLASS:

441, for processes wherein the electrical, magnetic, wave, or particulate energy is used to form nonoptical glass fibers, filaments, or preforms.

509, for apparatus utilizing electric or electromagnetic wave energy as heat to manufacture or treat fibers, waveguides, or preforms.

SEE OR SEARCH CLASS 250, Radiant Energy, appropriate subclasses, especially

492.1+, for irradiation treatment, per se, of an optical fiber, waveguide, or preform without any glassworking step (e.g., melting, shaping, etc.).