Dharmvir S Verma: Cell culture and continuous dialysis flask and method. Arnold White & Durkee, October 20, 1981: US04296205 (61 worldwide citation)

An apparatus and method for culturing tissue or cells and for the preparation of conditioned culture media is disclosed. More particularly, the apparatus and method applies continuous simultaneous dialysis of the culture media. The apparatus and method are particularly applicable to the long term gr ...

Lars G Stavlo: Pallet for pressurized gas cylinders. AGA, Burge & Porter Co, October 20, 1981: US04295431 (61 worldwide citation)

A pallet for receiving, retaining and facilitating the transportation of pressurized gas cylinders includes three fixed, upstanding fence-like side walls and a pair of upper and lower gate members defining a fourth, openable side wall. The fixed upstanding side walls extend around three sides of the ...

Harry J Wristers: Titanium trichloride catalyst component and the process for the production thereof. Exxon Research & Engineering Co, M B Kurtzman, October 20, 1981: US04295991 (61 worldwide citation)

A titanium trichloride catalyst component containing a minor amount of prepolymerized alpha-olefin and useful in the polymerization of alpha-olefins is produced by reducing titanium tetrachloride with an organoaluminum compound at low temperatures and then treating the resulting reduced solids produ ...

Michael S Montalto, Douglass L Blanding, Michael R Smith: Slide distributor for a chemical analyzer. Eastman Kodak Company, Donald D Schaper, October 20, 1981: US04296070 (60 worldwide citation)

A slide distributor is disclosed for transferring analysis slides between a plurality of modular elements in a chemical analyzer. The distributor comprises a rotor having a plurality of radial arms each of which has a slide holder adapted to receive an analysis slide and to transport the slide to a ...

Hiroshi Yamazaki, Takuro Isayama: Ink jet printing apparatus with reverse solvent flushing means. Ricoh Company, David G Alexander, October 20, 1981: US04296418 (60 worldwide citation)

An ink clog is automatically sensed in an ink ejection nozzle (14). The clog is cleared by moving a cap (28) into covering engagement with the nozzle orifice, causing solvent to flow through the nozzle (14) from the cap (28) to dissolve the clogged ink and subsequently causing air to flow through th ...

Masaru Hoshino: Apparatus for sterilizing a succession of food containers or the like. Dai Nippon Insatsu Kabushiki Kaisha, Koda and Androlia, October 20, 1981: US04296068 (60 worldwide citation)

Apparatus particularly suitable for sterilization of a succession of food containers being fed intermittently along a horizontal path, preparatory to the filling of such containers with a desired food. Formed over and under the feed path are two opposed sterilizing chambers into which a sterilizing ...

Eugene Berger: Polymerization of olefins. Solvay & Cie, October 20, 1981: US04296223 (58 worldwide citation)

The present invention comprises a catalyst system, catalyst complex, and a process for the polymerization and copolymerization of alpha-olefins in which the process is carried out in the presence of a catalyst system comprising an organic compound of a metal of Group Ib, IIa, IIIb, or IVb of the Per ...

Carl R Coles: Pressure-compensated diaphragm seals for actuators, with self-equalization. Zero Seal, Howard H Darbo, October 20, 1981: US04295653 (58 worldwide citation)

The invention has especial utility for providing completely safe hermetic sealing of actuators extending into highly sensitive or isolative process equipment, such as that using atomic radiation. The invention uses a general principle taught by the inventor's prior U.S. Pat. No. 3,933,052. The actua ...

A Kadry Ragheb: Magnetic switching device for contact-dependent and contactless switching. Hughes Barnard & Cassidy, October 20, 1981: US04296394 (58 worldwide citation)

A magnetic switching device comprising a drive member and a slave member having magnetically attractive surfaces, the two members move angularly with respect to one another so as to bring the magnetic surfaces in and out of contact with one another.

Gunther Schenck: Multichamber photoreactor. Howard H Darbo, October 20, 1981: US04296066 (56 worldwide citation)

Various embodiments of photoreactors are disclosed which have at least two irradiation chambers with a window therebetween. Ultraviolet radiation is introduced into one of the chambers at a side opposite the window so that it passes through that chamber, through the window and into the other chamber ...

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