31
Janice E McDougal: Coating of silanol-reactive surfaces with di-silyl poly(perfluorooxyalkylenes). Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, April 13, 1976: US03950588 (63 worldwide citation)

Substrates or articles having surfaces with silanol-reactive groups, e.g. glassware and ceramic cookware having hydroxylic surfaces, are coated with hydrolyzable di-silyl poly(perfluorooxyalkylene) compounds to provide said substrates or articles with a durable, oil and water repellent, abrasion res ...


32
James F Drake Jr, Fred R Paul Jr: Ballistic animal implant. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, April 6, 1976: US03948263 (61 worldwide citation)

Ballistically implantable projectile adapted to carry biologically active materials into a living animal body and thereafter to provide sustained release of said biologically active material into said living animal body.


33
Braun David L: Gas detection device. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, December 2, 1975: US3924219 (61 worldwide citation)

A device for measuring the concentrations of a selected gaseous component in a mixture of gases comprises a detector material capable of reacting with the component to be monitored disposed in a chamber having an inlet. A porous gas flow attenuating sheet closes the end of the chamber distally, the ...


34
Silver Spencer F, Winslow Louis E, Zigman Alvin R: Removable pressure-sensitive adhesive sheet material. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & Delahunt, November 25, 1975: US3922464 (60 worldwide citation)

A flexible self-sustaining backing is coated with a stable viscous copolymer latex formed from monomers of (1) major amounts of certain alkyl acrylates, (2) minor amounts of certain emulsifier monomers, and (3) if desired, minor amounts of zwitterionic monomers, and the water evaporated from the lat ...


35
Schultz Thomas E: Cube-corner retro-reflective article. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, November 25, 1975: US3922065 (60 worldwide citation)

A retro-reflective monolithic article formed of transparent material and having the array of cube-corner retro-reflective units on the rear face divided into cells. The walls defining the cells are formed integrally and extend directionally along the shortest path formed by dihedral edges between ad ...


36
Sowman Harold G: Refractory fibers of zirconia and silica mixtures. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & Delahunt, February 19, 1974: US3793041 (60 worldwide citation)

Refractory fibers of zirconia and silica mixtures are made by shaping and dehydratively gelling, for example by extruding in air, an aqueous mixture of a zirconium compound, such as zirconium diacetate, and colloidal silica, and heating the resulting gelled fiber in a controlled manner to decompose ...


37
Elton Robert L, Vander Louw John F: Method of making stretch-oriented porous films. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, October 29, 1974: US3844865 (58 worldwide citation)

Porosity (preferably microporosity) can be introduced into a polymeric film by (1) dispersing finely divided particles of a non-hygroscopic inorganic salt such as calcium carbonate into a suitable polymer, e.g., by milling, (2) forming a film of the filled polymer, and (3) stretching the film to pro ...


38
Kotz Arthur R: Electrographic recording process and apparatus using conductive toner subject to a capacitive force. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, June 11, 1974: US3816840 (58 worldwide citation)

An electrographic process and device are provided wherein a dielectric recording member is arranged between two electrodes to one of which is adherably bound electronically conductive toner powder, the toner powder providing an electronically conductive path between the electrode to which it is boun ...


39
Kistner John F: Consolidation of aggregate material. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & Delahunt, April 23, 1974: US3805532 (57 worldwide citation)

Aggregate material is contacted with a fluid agent comprising a hydrophilic urethane prepolymer to form a hydrophilic polyurethane-polyurea polymeric matrix which adhesively bonds the aggregate together as a resilient, integral, water-permeable mass which will sustain plant growth.


40
Richard A Patterson: Article transferring apparatus. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, June 15, 1976: US03963557 (56 worldwide citation)

A vacuum applicating apparatus for dispensing and applying measured lengths of tape on a moving substrate. The apparatus has a plurality of rotating applicating segments which are driven by a driving wheel. The segments can be disposed so that tape is fed onto the segments from a continuous supply o ...