1
Victor L Poirier, Warren C Clay, Benedict D T Daly: Percutaneous access device. Thermedics, TMCA Foundation, Herbert E Messenger, January 30, 1990: US04897081 (568 worldwide citation)

Disclosed is a percutaneous access device (PAD) for long-term skin penetration and use as an access port in the body of a patient. The buttonlike device includes a flat skirt for subdermal anchoring of the PAD and a neck through which a tube may extend for transmission of materials to or from the bo ...


2
Shiro Nankai, Mariko Kawaguri, Tashi Iijima: Biosensor and method for making the same. Matsushita Electric Industrial, Lowe Price LeBlanc Becker & Shur, January 30, 1990: US04897173 (495 worldwide citation)

This invention relates to a biosensor which comprises an insulative base, an electrode system formed on the substrate and primarily made of carbon, and a perforated body having an enzyme and an electron acceptor and integrally combined with the electrode system whereby a concentration of a specific ...


3
Deborah A Eppstein, Philip L Felgner, Thomas R Gadek, Gordon H Jones, Richard B Roman: N[.omega.,(.omega.-1)-dialkyloxy]- and N-[.omega.,(.omega.-1)-dialkenyloxy]-alk-1-yl-N,N,N-tetrasubstituted ammonium lipids and uses therefor. Syntex, David A Lowin, Tom M Moran, January 30, 1990: US04897355 (353 worldwide citation)

This invention relates to compounds of the formula ##STR1## or an optical isomer thereof wherein R.sup.1 and R.sup.2 are the same or different and are an alkyl or alkenyl group of 6 to 24 carbon atoms; R.sup.3, R.sup.4 and R.sup.5 are the same or different and are alkyl of 1 to 8 carbon atoms, aryl, ...


4
Jan Lewandowski, Paul S Malchesky, Yukihiko Nose: Pulse voltammetry. The Cleveland Clinic Foundation, Fay Sharpe Beall Fagan Minnich & McKee, January 30, 1990: US04897162 (336 worldwide citation)

A glucose sensing apparatus and method includes an electrocatalytic sensor having a reference electrode and a sensing electrode. A periodic signal is comprised of a ramp voltage which is intermingled a series of square wave measurement pulses. This signal is applied to the sensor. Current levels are ...


5
Albert Chang, Grover H Neuman, Amal A Shaheen Gouda, Todd A Smith: System and method for using cached data at a local node after re-opening a file at a remote node in a distributed networking environment. International Business Machines Corporation, Marilyn D Smith, January 30, 1990: US04897781 (303 worldwide citation)

In a distributed environment several data processing systems are interconnected across a network system. A distributed services program installed on the systems in the network allows the processors to access data files distributed across the various nodes of the network without regard to the locatio ...


6
Freeman H Rose, Charles D McGregor, Prabodh Mathur: Method and apparatus for stone localization using ultrasound imaging. Medstone International, Lyon & Lyon, January 30, 1990: US04896673 (262 worldwide citation)

The present disclosure relates to a method and apparatus for localizing an object in space, such as a gallstone in a human, using stereo imaging and ultrasound imaging. The localization system is described in connection with a dry table shock wave lithotripter, and uses a conventional ultrasound ima ...


7
Thomas R Tice, Richard M Gilley: Drug delivery system and method of making the same. Southern Research Institute, Needle & Rosenberg, January 30, 1990: US04897268 (255 worldwide citation)

A compatible, biodegradable microcapsule delivery system for active ingredients, including hormonally active peptides, proteins, or other bioactive molecules, and a method of making the same. The ingredients are encapsulated in biodegradable copolymer excipients of varying mole ratios and the blend ...


8
Joseph V DiLullo, Stephan C Schifter, Michael Negin, Kenneth W Paist: Vehicle status monitor and management system employing satellite communication. Secura Corporation, Woodcock Washburn Kurtz Mackiewicz & Norris, January 30, 1990: US04897642 (229 worldwide citation)

Apparatus and method for monitoring the status of a multiple part vehicle are disclosed. Apparatus according to the invention comprises a tag on a second part of the vehicle which impresses a unique ID code of the vehicle's existing electrical system. An interface unit in a first part of the vehicle ...


9
Mototsugu Ogawa: Endoscopic treating tool. Olympus Optical, Armstrong Nikaido Marmelstein Kubovcik & Murray, January 30, 1990: US04896678 (219 worldwide citation)

Endoscopic treating tool in which structure is provided for completely releasing the transmission of force to a treatment part of the tool adjacent a tip end of an insertable part of the tool from the operating member provided at a base side of the insertable part when the operating force for the op ...


10
Ken Clements: Semiconductor wafer array. Laser Dynamics, Fliesler Dubb Meyer & Lovejoy, January 30, 1990: US04897708 (219 worldwide citation)

A wafer array comprising a plurality of wafers of semiconductor material are stacked one on top of another. Through holes are provided in the wafers and electrically conductive liquid is inserted in the through holes for interconnecting all of the wafers. The conductive liquid is electrically insula ...



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