Robert B Loch

US Patent:

6940255, Sep 6, 2005

Filed:

Oct 23, 2003

Appl. No.:

10/692315

Inventors:

Robert Loch - Woodbury MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

H02J007/00
A61N001/36
G01N027/416

US Classification:

320132, 607 29, 324427

Abstract:

This document discusses, among other things, a system providing a battery charge indicator for an implantable medical device, such as using a lithium/carbon monofluoride (CFx) or other battery. Capacity vs. voltage data from a separate characterizing battery into a characterizing load impedance is stored in memory, such as in a lookup table or as a regression equation fitted to the data. For the actual battery of interest, then, a battery terminal voltage and a corresponding load current are measured, and a load impedance is calculated. A translation is performed to make the measured battery voltage and the characterizing capacity vs. voltage data comparable, so that a capacity reading can be obtained.

US Patent:

62969617, Oct 2, 2001

Filed:

Mar 5, 1999

Appl. No.:

9/262976

Inventors:

Gregory Scott Moy - Madison WI
Michael Andrew Ward - Belvidere IL
Robert Brian Dopp - Marietta GA
Robert Brian Loch - Woodbury MN
John Edward Oltman - Mount Horeb WI
Joseph Lynn Passaniti - Middleton WI

Assignee:

Rayovac Corporation - Madison WI

International Classification:

H01M 402
H01M 490
H01M 202

US Classification:

429 27

Abstract:

Cathode assembly precursor cathode assembly (26) and elongate air depolarized electrochemical cells (10) made therewith. Cathode assembly precursor comprises a closed-loop elongate cathode current collector (32), and perforations (56) from outer to inner surfaces, and catalystically active carbon extending into the perforations (56). The current collector (32) can be cylindrical and can be free from longitudinal jointing, or can have a longitudinal joint (54), preferably free from overlap of the side wall. The current collector (32) can comprise an imperforate edge region at the top (42) and/or bottom (44), left (48) and/or right (46) edge. The perforations (56) define an open traction of the wall, of about 45 to about 70 percent. Typical cathode assemblies (26) have air diffusion member (36) on the outer surface of the cathode assembly (26). Such air diffusion member (36) typically has thickness of about 0. 0025 to 0.

US Patent:

61432164, Nov 7, 2000

Filed:

Apr 15, 1999

Appl. No.:

9/292556

Inventors:

Robert B. Loch - Woodbury MN
James M. Larson - St. Paul MN
Brian D. Fredericksen - Delano MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

B29C 5900
B29D 6500

US Classification:

264 451

Abstract:

Approaches are described for producing porous, polymer electrodes with good characteristics for incorporation into polymer batteries. Two preferred processes are presented. The polymer electrodes can be subjected to additional processing to increase their porosity and electrical conductivity. The polymer electrodes preferably are incorporated into a polymer battery where the components are laminated together.

US Patent:

61717231, Jan 9, 2001

Filed:

Oct 10, 1997

Appl. No.:

8/948573

Inventors:

Robert B. Loch - Woodbury MN
James M. Larson - St. Paul MN
Brian D. Fredericksen - Delano MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

H01M 462

US Classification:

429217

Abstract:

Approaches are described for producing porous, polymer electrodes with good characteristics for incorporation into polymer batteries. Two preferred processes are presented. The polymer electrodes can be subjected to additional processing to increase their porosity and electrical conductivity. The polymer electrodes preferably are incorporated into a polymer battery where the components are laminated together.

US Patent:

62808834, Aug 28, 2001

Filed:

Mar 12, 1999

Appl. No.:

9/267310

Inventors:

William M. Lamanna - Stillwater MN
Robert B. Loch - Woodbury MN
Alan D. Fanta - Minneapolis MN
Steven D. Boyd - Woodbury MN
Hiroshi Shimada - Tokyo, JP
Phat T. Pham - Little Canada MN
Bryan J. Johnson - Prescott WI

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

H01M 618

US Classification:

429307

Abstract:

Electrolyte compositions and electrochemical systems containing such compositions are described where the electrolyte includes in a matrix material a combination of a conductive salt and a bis(perfluoroalkanesulfonyl)imide surfactant salt. The compositions improve wettability of electrodes and separators while maintaining and improving conductivity, stability, and compatibility with other cell components.