31
Toshihiko Shimizu, Masao Hotta, Kenji Maio: Two-step parallel analog to digital converter. Hitachi, Antonelli Terry & Wands, October 17, 1989: US04875048 (99 worldwide citation)

In a two-step parallel analog to digital converter of the type in which a first flash-type A/D converter determines the upper significant bits of a digital signal output having a desired number of bits and after a quantizing error of the first flash-type A/D converter has been determined from the di ...


32
Mamoru Kioka, Norio Kashiwa: Process for producing solid catalyst for polymerization of olefins. Mitsui Petrochemical, Sherman & Shalloway, October 17, 1989: US04874734 (99 worldwide citation)

A process for producing a solid catalyst for polymerization of olefins, which comprises bringing a solution of an aluminoxane into contact with a suspension of a particulate carrier having supported thereon a compound of a transition metal of Group IVB of the periodic table in a solvent in which the ...


33
Yutaka Kanayama: Locomotion-command method for mobile robots. Yutaka Kanayama, Glory Kogyo Kabushiki Kaisha, Koda and Androlia, October 17, 1989: US04875172 (96 worldwide citation)

A locomotion-command method for a mobile robot of the type having a master section and a locomotion module wherein a travelling route is specified by a command sent from the master section to the locomotion module and wherein travelling on a given direction line is set as a basic motion, and a trave ...


34
John F Reed, Marvin E Jones: Electret filter made of fibers containing polypropylene and poly(4-methyl-1-pentene). Minnesota Mining and Manufacturing Company, Donald M Sell, Walter N Kirn, Roger R Tamte, October 17, 1989: US04874399 (96 worldwide citation)

A fibrous electret filter better sustains electret filtration enhancement upon exposure to aerosol oils when made of fibers containing polypropylene and at least one percent by weight of poly(4-methyl-1-pentene). Even better stability is attained when the poly(4-methyl-1-pentene) content of the elec ...


35
John G Ulm: Decap dispensing system for water cooler bottles. Liqui Box Corporation, William V Miller, Sidney W Millard, October 17, 1989: US04874023 (95 worldwide citation)

A system for supplying liquid in large bottles from a point where they are filled to a dispenser having a reservoir for receiving the liquid. The bottles each have a neck which carries a cap unit for closing the spout thereof. Each cap unit has an outlet valve that is normally closed. The reservoir ...


36
Richard A Hillstead: Catheter sheath introducer. Cordis Corporation, Tarolli Sundheim & Covell, October 17, 1989: US04874378 (95 worldwide citation)

The improved catheter sheath introducer serves the purpose of introducing a catheter or the like into a patient's body vessel. The introducer includes a hollow housing having a pasageway extending through the proximal and distal ends of the housing so that an elongated catheter may slide through the ...


37
Joshua Alspector: Neuromorphic learning networks. Bell Communications Research, James W Falk, October 17, 1989: US04874963 (94 worldwide citation)

A neuron network which achieves learning by means of a modified Boltzmann algorithm. The network may comprise interconnected input, hidden and output layers of neurons, the neurons being "on-off" or threshold electronic devices which are symmetrically connected by means of adjustable-weight synapse ...


38
Akio Nakajima: Image enlarging method and device. Minolta Camera Kabushiki Kaisha, Price Gess & Ubell, October 17, 1989: US04875173 (94 worldwide citation)

A method and device for enlarging an image of digital data which is stored in a memory. The data consisting of one line of the image is read out from the memory and is written again in the memory with different ratio from a ratio of reading in order to enlarge the image. The entire data of the image ...


39
Katsutoshi Ando, Yo Ogawa: Electret fiber sheet and method of producing same. Toray, Armstrong Nikaido Marmelstein Kubovcik & Murray, October 17, 1989: US04874659 (94 worldwide citation)

An electret fiber sheet has polarized charges on its surface and preferably has charges in ordered orientation across it. The polarized charges are present in an amount of at least 7.times.10.sup.-11 C/cm.sup.2. Such sheets are formed to have a dust collecting efficiency. Sheets having an amount of ...


40
Carolyn M Smith: Processing apparatus for generating flow charts. British Telecommunications, Nixon & Vanderhye, October 17, 1989: US04875187 (93 worldwide citation)

A CAD system for determining interconnecting lines for (e.g.) information boxes of a flow chart limits the number of vectors (lines parallel with the vertical and horizontal axes of a display device) used to effect an interconnection. The system follows a number of rules which result in a more aesth ...