William C Robbins

US Patent:

6416188, Jul 9, 2002

Filed:

Apr 11, 2000

Appl. No.:

09/546161

Inventors:

Jeanine M. Shusta - Mahtomedi MN
Norman D. Ligtenberg - Cottage Grove MN
William B. Robbins - Maplewood MN

Assignee:

3M Innovative Properties Company - Saint Paul MN

International Classification:

G02B 5128

US Classification:

359536, 359538, 359540, 428204, 428207

Abstract:

Exposed lens retroreflective appliques incorporate a monolayer of beads and a dielectric mirror proximate the beads. A pigmented or otherwise colored bead bond layer in which the beads are partially embedded is visible through the dielectric mirror, giving the article a highly colored daytime appearance. The appliques exhibit an initial reflectivity. By appropriate materials selection, the appliques can be made to retain at least 75%, and in most instances at least 90%, of the initial reflectivity if subjected to fifty home laundering cycles. In one case the dielectric mirror includes zinc sulfide as a relatively high refractive index material and calcium fluoride as a relatively low refractive index material. In another case the dielectric mirror includes zinc sulfide as the relatively high refractive index material and silicon dioxide as the relatively low refractive index material.

US Patent:

6500568, Dec 31, 2002

Filed:

Jun 6, 2001

Appl. No.:

09/875694

Inventors:

William B. Robbins - Maplewood MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

B32B 1501

US Classification:

428670, 505239, 505814, 174426

Abstract:

Described is an article comprising a biaxially textured metal substrate and a layer of palladium deposited on at least one major surface of the metal substrate; wherein the palladium layer has desired in-plane and out-of-plane crystallographic orientations, which allow subsequent layers that are applied on the article to also have the desired orientations.

US Patent:

56378823, Jun 10, 1997

Filed:

Dec 1, 1995

Appl. No.:

8/592405

Inventors:

Ranjith Divigalpitiya - London, CA
Bimsara W. Disanayaka - London, CA
William B. Robbins - Maplewood MN
Earl L. Cook - Woodbury MN
Keith K. McLaughlin - Eagan MN

Assignee:

Minnesota Mining and Manufacturing Company - Saint Paul MN

International Classification:

G01N 2304

US Classification:

250580

Abstract:

A detector plate for use in a radiation imaging system includes a first conductive layer, a dielectric layer, a photoconductive layer and a second conductive layer, arranged as a stack in that order. The first conductive layer and the dielectric layer are substantially transparent to radiation energy so as to allow the energy to pass therethrough to be received by the photoconductive layer. The first conductive layer has a periphery defined by a first edge and the dielectric layer has a periphery defined by a second edge, wherein the first edge is offset inward of the second edge defining a margin between the first and second edges. In use, this margin helps inhibit electrical arcing from the first conductive layer to the second conductive layer when a high voltage is applied between these two layers. A preferred embodiment of the detector plate includes an electrically insulative barrier of silicone based Sylgard in the margin around the periphery of the first conductive layer in the form of a "dam" to further prevent arcing and resulting detector plate failure. It is also preferable to include a linear contact on the first conductive layer adapted to connect a high voltage electrode of a power supply to the first conductive layer.

US Patent:

56608926, Aug 26, 1997

Filed:

Dec 8, 1995

Appl. No.:

8/569713

Inventors:

William B. Robbins - Maplewood MN
Leif Christensen - St. Paul MN
Richard E. Volkmann - Arden Hills MN
Rafael M. Yasis - White Bear Lake MN
Laura M. Aguilar - St. Paul MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

H05H 100

US Classification:

427537

Abstract:

A metallic film is disclosed. The film has a layer of an organic polymer substrate having an sulfur-reactive surface, to which is adhered a vapor deposited metallic layer. Optionally, a metallic halide layer is formed on the metallic layer to provide depolarizing capacity for the metallic film. Methods of making and using the metallic film are disclosed. Biomedical electrodes, including radiolucent defibrillation electrodes, window films, optical reflectors, and flexible electronic circuits are articles which can use the metallic film as a component.

US Patent:

55060595, Apr 9, 1996

Filed:

May 14, 1993

Appl. No.:

8/062390

Inventors:

William B. Robbins - Maplewood MN
Leif Christensen - St. Paul MN
Richard E. Volkmann - Arden Hills MN
Rafael M. Yasis - White Bear Lake MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

B32B 700

US Classification:

428457

Abstract:

A metallic film is disclosed. The film has a layer of an organic polymer substrate having an sulfur-reactive surface, to which is adhered a vapor deposited metallic layer. Optionally, a metallic halide layer is formed on the metallic layer to provide depolarizing capacity for the metallic film. Methods of making and using the metallic film are disclosed. Biomedical electrodes, including radiolucent defibrillation electrodes, window films, optical reflectors, and flexible electronic circuits are articles which can use the metallic film as a component.

US Patent:

57678081, Jun 16, 1998

Filed:

Jan 13, 1995

Appl. No.:

8/372599

Inventors:

William B. Robbins - Maplewood MN
Timothy S. Skogland - Scandia MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

H01Q 138

US Classification:

349700MS

Abstract:

A microstrip patch antenna has a first conductive layer adjacent a dielectric substrate. The first conductive layer has a thickness of less than one skin depth of the material of the first conductive layer. A second conductive layer acts as the ground plane for the first conductive layer and a feed network feeds the radiating patch of the first conductive layer.

US Patent:

45395721, Sep 3, 1985

Filed:

Feb 15, 1983

Appl. No.:

6/466436

Inventors:

William B. Robbins - Maplewood MN
Richard F. Willson - Hudson WI
Robert P. Freese - Lake Elmo MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

G01D 1534

US Classification:

3461351

Abstract:

An optical recording medium containing a light-absorbing film of refractory material less than 60 nm thick and selected from carbides of Al, Hf, Nb, Ta, Ti, V, W, and Zr and alloys herebetween, whereupon localized heating of the light-absorbing film enables information storage in the form of localized features in the heated areas which can subsequently be optically detected and can be used as a master information record for replication purposes.