Randolph W Chan, 69962 Highlands Cir, Los Altos, CA 94024

4845343, Jul 4, 1989

Nov 28, 1988

7/277521

Ted M. Aune - Fremont CA
Paul B. Germeraad - Menlo Park CA
Randolph W. Chan - Palo Alto CA

Raychem Corporation - Menlo Park CA

H05B 334

219545

An electrical heater which includes a fabric prepared from electrodes and an elongate resistive heating element which is composed of a conductive polymer, preferably a PTC conductive polymer, to render the heater self-regulating. The fabric is laminated to, and preferably embedded in, a sheet of an insulating polymer, particularly a non-tracking insulating polymer.

4700054, Oct 13, 1987

May 17, 1985

6/735428

James T. Triplett - Livermore CA
Paul B. Germeraad - Menlo Park CA
Randolph W. Chan - Sunnyvale CA
Michael L. Jensen - Mountain View CA

Raychem Corporation - Menlo Park CA

H05B 334
H05B 354

219545

An electrical heater which comprises a fabric prepared from at least one of the electrodes and another elongate element of substantially higher resistance. The heater preferably comprises a PTC element, e. g. of a conductive polymer, to render the heater self-regulating. The PTC element may be in the form of a fiber forming part of the fabric, or a layer surrounding one of the electrodes, or a laminar element in which the fabric is embedded. The fabric can if desired be laminated to a sheet of a polymer, e. g. an insulating polymer or a ZTC conductive polymer. A shrinkable fabric heater can be made by incorporating a heat-shrinkable non-conductive filament into the fabric, perpendicular to both electrodes, and is useful for example for enclosing splices in telephone cables.

4743321, May 10, 1988

Oct 4, 1985

6/784288

Pravin L. Soni - Union City CA
Peter H. Van Konynenburg - Palo Alto CA
Mark Wartenberg - San Jose CA
Randolph W. Chan - Sunnyvale CA
Stephen M. Jacobs - Cupertino CA

Raychem Corporation - Menlo Park CA

B32B 3126

156 85

The resistivity/temperature characteristics of PTC conductive polymers which have little or no cross-linking can be modified by stretching. The rate at which resistivity rises with temperature is increased, and the peak resistivity is decreased; however, the decrease in peak resistivity is substantially smaller than that observed with PTC conductive polymers having a high degree of cross-linking. Therefore, heat-recoverable electrical devices, particularly for covering telephone and other cable splices, comprise (a) a layer of a PTC conductive polymer which has little or no cross-linking, (2) an adjacent heat-recoverable layer of a PTC or ZTC conductive polymer which has a relatively high level of cross-linking, and (3) electrodes which can be connected to a power supply so that current passes through the layers and causes recovery of the device; preferably an uncrosslinked PTC layer is sandwiched between two cross-linked ZTC layers. Non-recoverable devices, e. g. heaters, can have valuable characteristics when they comprise PTC conductive polymer elements which have been given a relatively low degree of orientation by stretching.

4969402, Nov 13, 1990

Jan 31, 1989

7/304541

Randolph W. Chan - Palo Alto CA
Lawrence D. Schwartz - Menlo Park CA
Richard E. Rodkey - Pleasanton CA

Raychem Corporation - Menlo Park CA

B41L 3514
B32B 300

101488

Permanent white indicia are applied to a polymeric surface, preferably of a black, heat-recoverable marker sleeve for wire or cable, using an ink composition comprising a pigment that is thermally stable at a temperature of at least about 350. degree. C. , preferably titanium dioxide and a binder, such as nitrocellulose, and then heating the surface to permatize the mark. The marked article passes MIL-STD-202 in mark permanence.

4900877, Feb 13, 1990

Jul 12, 1988

7/218417

Robert S. Dubrow - Redwood City CA
Christine J. Holland - San Mateo CA
Randolph W. Chan - Palo Alto CA
Albert R. Martin - Oakland CA
Dennis C. Siden - Portola Valley CA
Paul B. Germeraad - Menlo Park CA

Raychem Corporation - Menlo Park CA

H05K 900

174 35GC

This invention provides E. M. I. gaskets for electrically shielding and environmentally sealing the space between two surfaces which comprises a metallic electrically conductive deformable structure adapted for forming electrical contact with said surfaces and/or providing electrical shielding in the space between said surfaces; and a gel material for sealing the space between said surfaces having a cone penetration value of about 100 to about 350 (10. sup. -1 mm) and an ultimate elongation of at least 200% and being present in sufficient amount and positioned to provide environmental seal between said surfaces and to provide environmental protection for said metallic structure. The gel may encapsulate the entire metallic structure so that portions of the metallic structure pierces through the gel when the gasket is installed to make electrical contact. Alternatively portions of the metallic structure may extend beyond the surface of the gel and the gel deforms to cover exposed portions of the metallic structure when the gasket is installed. The gasket of this invention provides moisture seal and is resistant to corrosion.

2017035, Dec 14, 2017

Aug 28, 2017

15/687933

- Billerica MA, US
Ara N. Knaian - Newton MA, US
Steven J. O'Neil - Pembroke MA, US
Gregg M. Duthaler - Needham MA, US
Guy M. Danner - Somerville MA, US
Robert W. Zehner - Los Gatos CA, US
Alberto Goenaga - Houston TX, US
Benjamin Max Davis - Oakland CA, US
Randolph W. Chan - Los Altos CA, US
Jonathan D. Albert - Philadelphia PA, US
Glen Crossley - Hamilton, CA

G02F 1/167
G02F 1/1339
G02F 1/13
B32B 37/18
B32B 37/12
G02B 1/14
B05D 7/00

A front plane laminate useful in the manufacture of electro-optic displays comprises, in order, a light-transmissive electrically-conductive layer, a layer of an electro-optic medium in electrical contact with the electrically-conductive layer, an adhesive layer and a release sheet. This front plane laminate can be prepared as a continuous web, cut to size, the release sheet removed and the laminate laminated to a backplane to form a display. Methods for providing conductive vias through the electro-optic medium and for testing the front plane laminate are also described.

2016013, May 19, 2016

Jan 20, 2016

15/001308

- Billerica MA, US
Ara N. Knaian - Newton MA, US
Steven J. O'Neil - Pembroke MA, US
Gregg M. Duthaler - Needham MA, US
Guy M. Danner - Somerville MA, US
Robert W. Zehner - Los Gatos CA, US
Alberto Goenaga - Houston TX, US
Benjamin Max Davis - San Francisco CA, US
Randolph W. Chan - Los Altos CA, US
Jonathan D. Albert - Philadelphia PA, US
Glen Crossley - Hamilton, CA

G02F 1/167
G02F 1/13

A front plane laminate useful in the manufacture of electro-optic displays comprises, in order, a light-transmissive electrically-conductive layer, a layer of an electro-optic medium in electrical contact with the electrically-conductive layer, an adhesive layer and a release sheet. This front plane laminate can be prepared as a continuous web, cut to size, the release sheet removed and the laminate laminated to a backplane to form a display. Methods for providing conductive vias through the electro-optic medium and for testing the front plane laminate are also described.

2016013, May 19, 2016

Jan 20, 2016

15/001312

- Billerica MA, US
Ara N. Knaian - Newton MA, US
Steven J. O'Neil - Pembroke MA, US
Gregg M. Duthaler - Needham MA, US
Guy M. Danner - Somerville MA, US
Robert W. Zehner - Los Gatos CA, US
Alberto Goenaga - Houston TX, US
Benjamin Max Davis - San Francisco CA, US
Randolph W. Chan - Los Altos CA, US
Jonathan D. Albert - Philadelphia PA, US
Glen Crossley - Hamilton, CA

G02F 1/167
G02F 1/1339
G02B 1/14

A front plane laminate useful in the manufacture of electro-optic displays comprises, in order, a light-transmissive electrically-conductive layer, a layer of an electro-optic medium in electrical contact with the electrically-conductive layer, an adhesive layer and a release sheet. This front plane laminate can be prepared as a continuous web, cut to size, the release sheet removed and the laminate laminated to a backplane to form a display. Methods for providing conductive vias through the electro-optic medium and for testing the front plane laminate are also described.