3M

About: 3M is a company organization based out in Saint Paul, Minnesota, United States. It is known for research contribution in the topics: Layer (electronics) & Coating. The organization has 7603 authors who have published 7907 publications receiving 254227 citations. The organization is also known as: Minnesota Mining and Manufacturing Company & 3M Company.

Integrated optical fiber coupler and method of making same

Abstract: An integrated optical coupler comprises a substrate with fiber-aligning grooves and waveguiding channels and a covering with complementary grooves and, optionally, channels. These couplers can be made from reproducible masters and electroplated molds made from those masters.

Method for making abrasive grain and abrasive articles

Abstract: Method for making alpha alumina-based abrasive grain from a dispersion comprising boehmite. The abrasive grain can be incorporated into abrasive products such as coated abrasives, bonded abrasives, and non-woven abrasives.

Butixocort aerosol formulations in hydrofluorocarbon propellant

Abstract: Pharmaceutical solution aerosol formulations of butixocort propionate as the sole active drug agent and a propellant selected from the group consisting of 1,1,1,2-tetrafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane, and a mixture thereof.

Slip control sheeting and articles covered with same

Abstract: A slip control sheeting can comprise a backing (12) having a first end and a second major surface (14, 16) and an array of protrusions (22) on the first major surface. The protrusions can be pyramids with polygonal bases or pyramidal frustums with polygonal bases. Alternatively, the protrusions can comprise posts having non-planar sides and bases on the first major surface wherein the posts taper radially inwardly from their bases to their tops, e.g., cones or conical frustums with circular bases. The sheeting can further comprise at least one of a layer of adhesive (18) on the second major surface, a reinforcing web, or a mechanical fastening component for fastening the backing to a substrate. The sheeting can be made so that it retroreflects less than about 10 percent of a beam of electromagnetic radiation which is incident at any angle to the second major surface, the electromagnetic radiation having any wavelength from about 0.39 micron to about 1,000 microns.

Method and apparatus for detecting and identifying microbial colonies

Abstract: A method and system for detecting and identifying microbial colonies in an inoculated growth medium first acquires a first image of the inoculated growth medium (100). After a selected incubation time interval (110), a second image of the growth medium is acquired (100). A difference image is produced by taking the difference between corresponding pixels in the first and second images (112). Potential colonies are identified within the difference image by locating peak pixels having local maximum pixel intensities within the difference image and having decreasing gradients in a predetermined number of directions (118). The potential colonies are validated as actual colonies by eliminating those potential colonies that are noise spikes or noise around previously validated colonies (120).