Chih Chun Wang

US Patent:

43917208, Jul 5, 1983

Filed:

Aug 16, 1982

Appl. No.:

6/408502

Inventors:

Chih C. Wang - Hightstown NJ
Ronald F. Bates - Trenton NJ

Assignee:

RCA Corporation - New York NY

International Classification:

C10M 150

US Classification:

252 496

Abstract:

Bis(hydroxyalkyl)disiloxane lubricants of the formula ##STR1## wherein R. sub. 1 and R. sub. 3 are methyl or ethyl and R. sub. 2 and R. sub. 4 are linear alkyl groups of up to 20 carbon atoms. These compounds are useful as additives to methyl alkyl siloxane lubricants for conductive high density information discs. Discs lubricated with the lubricant mixture exhibit improved stability to environments of high temperature and high relative humidity.

US Patent:

40907589, May 23, 1978

Filed:

Jan 21, 1977

Appl. No.:

5/761447

Inventors:

Chih Chun Wang - Hightstown NJ
Thomas Clifford Lausman - Cranbury NJ
Ronald Frank Bates - Trenton NJ

Assignee:

RCA Corporation - New York NY

International Classification:

H01J 950

US Classification:

316 2

Abstract:

The method comprises the steps of providing a camera tube having an evacuated envelope, a photoconductive layer primarily of lead monoxide, an activated getter and an unactivated getter within the envelope. After a period of operation or storage the tube exhibits a deterioration in spectral photosensitivity of the layer. The characteristic ratio of blue light photosensitivity is measured and when the ratio is less than about 80% the unactivated getter is activated to regenerate the tube.

US Patent:

42606470, Apr 7, 1981

Filed:

Jun 13, 1979

Appl. No.:

6/048161

Inventors:

Chih C. Wang - Hightstown NJ
Ronald F. Bates - Trenton NJ

Assignee:

RCA Corporation - New York NY

International Classification:

B05D 306

US Classification:

427 40

Abstract:

In a method for the glow discharge deposition of an amorphous, continuous layer from an organosilane and oxygen where the deposition is interrupted, wherein a glow discharge in oxygen is employed prior to resumption of glow discharge layer deposition.

US Patent:

43707394, Jan 25, 1983

Filed:

Jun 9, 1980

Appl. No.:

6/158062

Inventors:

Chih C. Wang - Hightstown NJ
Harry L. Pinch - Princeton NJ
Ronald F. Bates - Trenton NJ

Assignee:

RCA Corporation - New York NY

International Classification:

G11B 906
G11B 344

US Classification:

369126

Abstract:

An improved information storage and playback system comprising a playback stylus and a disc record. The information is recorded in the surface of the disc record and there is relative motion between the disc and the playback stylus during recovery of the recorded information. The stylus is fabricated out of a dielectric support material and contacts the record disc surface during the recovery of the information. The improvement comprises employing a playback stylus whose dielectric support material is single crystal magnesium aluminate spinel. The spinel composition comprises a ratio of MgO to Al. sub. 2 O. sub. 3 of from about 1:1 to about 1:2. 5.

US Patent:

44146604, Nov 8, 1983

Filed:

Aug 13, 1982

Appl. No.:

6/408021

Inventors:

Chih C. Wang - Hightstown NJ
Ronald F. Bates - Trenton NJ

Assignee:

RCA Corporation - New York NY

International Classification:

C07F 718
G11B 370

US Classification:

369286

Abstract:

High density information discs comprising conductive carbon loaded polyvinylchloride discs are lubricated with a fractionated methyl alkyl siloxane lubricant which contains an alkylene oxide silicone copolymer additive.

US Patent:

40010996, Jan 4, 1977

Filed:

Mar 3, 1976

Appl. No.:

5/663631

Inventors:

Chih Chun Wang - Hightstown NJ
Thomas Clifford Lausman - Cranbury NJ
Ronald Frank Bates - Trenton NJ

Assignee:

RCA Corporation - New York NY

International Classification:

B01K 100
B05D 512

US Classification:

204164

Abstract:

A photosensitive layer comprising primarily lead monoxide is deposited on a signal electrode of a vidicon camera tube target. The deposition is carried out in an atmosphere containing oxygen and deuterium oxide. The vidicon target formed exhibits improved transient response leg properties and hole transport characteristics.

US Patent:

42751012, Jun 23, 1981

Filed:

Aug 9, 1979

Appl. No.:

6/065065

Inventors:

Chih C. Wang - Hightstown NJ
Lincoln Ekstrom - Princeton NJ
Thomas C. Lausman - Cranbury NJ
Henry Wielicki - Wyndmoor PA

Assignee:

RCA Corporation - New York NY

International Classification:

B32B 302
G11B 574

US Classification:

369286

Abstract:

Molecular distillation of methyl alkyl siloxanes of the formula ##STR1## wherein R. sub. 1 and R. sub. 2 are alkyl groups of 4-20 carbon atoms and m and p are integers to produce a distillate having a molecular weight fraction wherein the sum of m and p is about 4, produces an improved lubricant for the video disc, a lubricant that is stable to long term storage and to wide variations in temperature and relative humidity.

US Patent:

43426590, Aug 3, 1982

Filed:

Aug 9, 1979

Appl. No.:

6/065064

Inventors:

Chih C. Wang - Hightstown NJ
Lincoln Ekstrom - Princeton NJ
Thomas C. Lausman - Cranbury NJ
Henry Wielicki - Wyndmoor PA

Assignee:

RCA Corporation - New York NY

International Classification:

C07F 708

US Classification:

252 496

Abstract:

Molecular distillation of methyl alkyl siloxanes of the formula ##STR1## wherein R. sub. 1 and R. sub. 2 are alkyl groups of 4-20 carbon atoms and m and p are integers to produce a distillate having a molecular weight fraction wherein the sum of m and p is about 4, produces an improved lubricant for the video disc, a lubricant that is stable to long term storage and to wide variations in temperature and relative humidity.