3M
Saint Paul, MN, United States
Saint Paul, MN, United States

The 3M Company, formerly known as the Minnesota Mining and Manufacturing Company, is an American multinational conglomerate corporation based in St. Paul, Minnesota. 3M headquarters are in the St. Paul suburb of Maplewood, Minnesota.With $30 billion in sales, 3M employs 88,000 people worldwide and produces more than 55,000 products, including: adhesives, abrasives, laminates, passive fire protection, dental and orthodontic products, electronic materials, medical products, car-care products , electronic circuits, and optical films. 3M has operations in more than 65 countries including 29 international companies with manufacturing operations and 35 companies with laboratories. 3M products are available for purchase through distributors and retailers in more than 200 countries, and online directly from the company. Wikipedia.


Time filter

Source Type

Broadband solid state light sources include remote phosphor LED(s), short-wavelength direct emitting LED(s), and long-wavelength direct emitting LED(s). A diffuse or clear cover member covers these LEDs. Each remote phosphor LED includes an LED, a phosphor layer, and a dichroic reflector. The light sources can provide a broadband output light over a wide color range, and can do so efficiently while energizing a high percentage or proportion of the total number of LEDs in the system. The broadband output may for example exhibit a color difference of at least 0.2 in CIE chromaticity units, and/or a correlated color temperature difference of at least 4000 or 5000 Kelvin, while energizing more than half, or at least 60%, or at least 70%, of the total number of LEDs. Numbers of LEDs can be replaced with effective numbers of LEDs if LEDs of substantially different sizes are included in the light source.


Methods of trend analysis for information related to released criminal offenders, the methods include accessing geospatial location information including date and time information for released criminal offenders and identifying repeated visits by one of the released criminal offenders within a defined proximity of a particular geospatial location, identifying a movement pattern of one of the released criminal offenders, correlating the movements of one the released criminal offenders to the movements of a subscriber, correlating the proximity of one of the released criminal offenders to a location where criminal activity has occurred, or comparing the geospatial location with previous activity of the released offender to predict potential future criminal activity.


Patent
3M | Date: 2017-05-17

The present application relates to a sheeting comprising a layer of translucent, radiation-sensitive material having on a first surface hemi-spheroidal or hemi-aspheroidal microlenses and comprising one or more images at positions internal to the layer of material, wherein at least one of the images is a partially complete image, and each of the images is associated with a different one of the microlenses, and wherein the microlenses have refractive surfaces that transmit light to positions within the layer of material to produce a composite image from the images from the partially complete image formed within the layer of material so that the composite image appears to float above the sheeting, float below the sheeting, or float in the plane of the sheeting.


Flexible LED assemblies that have coplanar integrated conductive features upon which an LED can be mounted, and methods of making such LED assemblies are described. The flexible LED assembly includes a flexible polymer substrate, a first conductive feature, a second conductive feature and an LED. The first conductive feature is positioned both within the flexible substrate and on a surface of the flexible substrate. The second conductive feature is positioned both within the flexible substrate and on a surface of the flexible substrate. The first and second conductive features are separated by a gap therebetween. The LED is mounted on both the first and second conductive features, and the first and second conductive features are substantially coplanar with one another.


Asymmetric articles are described including a porous substrate with two opposing major surfaces and a porous structure extending between the surfaces, and a polymeric coating on one of the major surfaces and extending into the porous structure to a depth of the porous structure. Methods for making an asymmetric composite article are also provided, including providing a porous substrate, treating the porous substrate with a plasma treatment or a corona treatment from one major surface to a depth of the porous structure between the two major surfaces. The method further includes applying a coating solution to the treated porous substrate and drying the coating solution to form a composite asymmetric composite article having a polymeric coating on one major surface and extending into the porous structure to the depth of the treated porous structure.


A capsule for mixing and dispensing a dental material which has a body forming a cavity. The cavity is closed by a liquid container. The body and the liquid container in combination form a mixing chamber containing a first component of the dental material. The liquid container has a cup-shaped cartridge formed by a cartridge front wall and a cartridge side wall and having a rear opening. A plug is movably joined within the cartridge through the rear opening for extruding a liquid second component of the dental material. The cartridge further has a channel extending through the cartridge side wall for releasing the second component into the mixing chamber. The body side wall inwardly has a recess being dimensioned for establishing a fluid communication between the channel and the cavity in an activated position, where the activated position corresponds to a second axial position of a two different axial positions of the of the cartridge and the body relative to each other. Further the first axial position corresponds to an inactivated position in which the channel is offset from the recess. A first cover film seals the joint between the cartridge and the plug, and the channel is openably sealed by a second cover film at least in the inactivated position. The capsule helps facilitating the preparation of a dental material.


Patent
3M | Date: 2017-04-26

A repair compound for use in all applications and particularly well-suited for large hole repair. The repair compound includes a latex resin, a thickener, fibers, and a filler material. In some embodiments, the repair compound is configured to exhibit pseudoplastic-type behavior. In some embodiments, the repair compound has a density of not greater than 4.0 lbs/gal. In some embodiments, the repair compound includes hydrophobic and hydrophilic fibers of different morphologies. In some embodiments, the repair compound includesHASE-type thickeners. In some embodiments, the repair compound includes a bimodal distribution of hollow glass microspheres from two different strength/size curves.


A process for preparing a concentration agent comprising (a) providing a particulate support comprising diatomaceous earth, metal oxide-modified diatomaceous earth, or combinations thereof; (b) providing et hydrolyzable titanium dioxide precursor compound; (c) combining said support and said compound; and (d) hydrolyzing said compound so as to deposit titanium dioxide on said support; wherein when said particulate support consists of diatomaceous earth the process further comprises (e) calcining said concentration agent.


Patent
3M | Date: 2017-03-08

A polymerizable composition comprising a (meth)acrylate copolymer having pendent photoinitiator groups and a high Tg monomer or macromer is described. The resulting copolymer is physically crosslinking and is of the formula I: (I).


Obrovac M.N.,Dalhousie University | Chevrier V.L.,3M
Chemical Reviews | Year: 2014

Most studies set out to make materials that improve on the specific capacity of graphite, usually without regard to average voltage, volumetric capacity, or the many other properties listed above that are more applicable to implementation in practical cells. One difficulty in choosing proper metrics for anodes stems from basic electrochemistry: it is not possible to calculate the energy of a single electrode. To provide motivation for using alloy anode materials and a framework for comparison, key performance metrics need to be defined. It is well-known that the volumetric and specific capacities of the active elements are far greater than that of graphite. Because all alloys expand considerably during lithiation, this volume must be accommodated somewhere within a battery. To make more informative performance comparisons, it is necessary to use a cell model, preferably one that is most representative of alloy materials application.

Loading 3M collaborators
Loading 3M collaborators