1
Ranjith Divigalpitiya, David E Livingstone, Robert S Moshrefzadeh, Elisa M Cross: Pressure activated switch and touch panel. 3M Innovative Properties Company, Robert J Pechman, October 26, 2004: US06809280 (66 worldwide citation)

The present invention provides a switchable pressure activated electronic device. The switchable electronic device includes a composite material disposed between two conductors. The composite material electrically connects the two conductors when pressure is applied between them, and electrically is ...


2
David E Livingstone, Michael R Harms, Daniel T Chen: Regenerable air cleaning device. 3M Innovative Properties Company, Gary L Griswold, Robert W Sprague, William J Bond, September 24, 2002: US06454834 (44 worldwide citation)

A regenerable air cleaning device is disclosed which comprises a filter holder supporting a regenerable filter that includes activated carbon fibers (ACF) and a control system that is adapted to determine when to regenerate the regenerable filter. The device exhibits high performance and longevity o ...


3
David C Chambers, Glen Connell, Ranjith Divigalpitiya, David E Livingstone, Agatona D Monteagudo, Susan C Noe, Tejmeen K Sandhu: Method and apparatus for making particle-embedded webs. 3M Innovative Properties Company, May 27, 2003: US06569494 (22 worldwide citation)

A method for dispensing particles onto a surface. The steps of the process include holding the particles in a hopper having a dispensing opening covered by a screen which has uniformly sized openings that are sufficiently large to allow the largest particles to pass through, yet sufficiently small t ...


4
David E Livingstone: Collapsible hook with two magnets. Henkel Diversified, Standley Law Group, November 7, 2006: US07131616 (15 worldwide citation)

A hook for hanging articles is capable of holding the weight of a typical garment or knapsack while permitting the release of heavier objects. The hook has a base with two spaced-apart outwardly extending brackets and an arm pivotally mounted to and between the brackets. The arm is pivotable between ...


5
Lisa M Croll, Pierre Legare, David E Livingstone: Portable blower system. 3M Innovative Properties Company, Anna A Wetzels, July 6, 2010: US07748381 (15 worldwide citation)

A portable cooling or respiratory blower system of the type carried by a user's body includes a housing having two air flow chambers. An impeller is rotatably disposed between the two air flow chambers and includes a base wall that places the two air flow chambers in non-fluidic communication when t ...


6
David C Chambers, Glen Connell, Ranjith Divigalpitiya, David E Livingstone, Agatona D Monteagudo, Susan C Noe, Tejmeen K Sandhu: Method and apparatus for making particle-embedded webs. 3M Innovative Properties Company, Dean M Harts, December 28, 2004: US06834612 (3 worldwide citation)

Provided is a dispenser for dispensing particles onto a surface comprising a hopper for receiving particles, wherein the hopper has an opening at its bottom, a screen having openings and located adjacent the opening of the hopper, wherein the screen openings are uniformly sized and spaced and are su ...


7
Trevor Theriault, David E Livingstone: Light and noise maker for diving use. Standley Law Group, February 24, 2009: US07496001 (1 worldwide citation)

A dive accessory has an outer shell that encompasses a light maker and a noise maker. The light maker is waterproofed and has a light source electrically connected to an electrical power source for powering the light source. A light switch selectively opens and closes the electrical connection to sw ...


8
Marie Claude M Brandys, Kam C Wu, David E Livingstone, David C Chambers, John T Kilbourne: Protective liner for slurry pipelines. 3M Innovative Properties Company, Gregg H Rosenblatt, January 22, 2008: US07320341 (1 worldwide citation)

A pipe comprises an outer surface and an inner surface, where the inner surface includes an abrasion resistant material layer covering a substantial portion thereof. An adhesive layer affixes the abrasion resistant material layer to the inner surface. The abrasion resistant layer can reduce and prev ...


9
David E Livingstone, Robin G Pitman, Ronald W Matechuk: Spreading apparatus for flowable materials. Billy Star Holding, Standley Law Group, May 29, 2007: US07223038 (1 worldwide citation)

An apparatus spreads flowable materials such as adhesives and/or sealants on a surface such as a floor and/or a wall. The apparatus has a pad retainer for a removable spreader pad and a reservoir chamber for flowable material pivotally attached to the pad retainer to permit pivoting of the reservoir ...


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