1
Paul G Yock: Catheter apparatus, system and method for intravascular two-dimensional ultrasonography. Cardiovascular Imaging Systems, Flehr Hohbach Test Albritton & Herbert, January 3, 1989: US04794931 (490 worldwide citation)

Ultrasonic apparatus, system and method for high resolution intravascular imaging to assist indovascular lesions and to monitor the results of interventional therapy. An ultrasonic transducer is carried by the distal end of a catheter adapted for insertion into a vessel, and either the transducer or ...


2
Harold D Kletschka: Angioplasty device and method of using the same. Dorsey & Whitney, January 3, 1989: US04794928 (431 worldwide citation)

An angioplasty device is disclosed for treatment of, or for compression and/or removal of an obstruction from, a vessel or vessel-like structure in medical, non-medical and industrial applications. The device incorporates a trap/barrier for trapping and removing particles that break away from the tr ...


3
Jerry L Dragoo: Absorbent article having leakage-resistant dual cuffs. The Procter & Gamble Company, Steven W Miller, John M Pollaro, Fredrick H Braun, January 3, 1989: US04795454 (408 worldwide citation)

An integral disposable absorbent article such as a diaper provided with an absorbent core, a liquid impervious backsheet, an elastically contractible gasketing cuff preferably formed by a gasketing flap and a flap elastic member, a barrier cuff having a flap portion and a channel portion comprising ...


4
Everett W Wolfe: Method of controlling the copying of software. Pride Software Development, Harry W Barron, January 3, 1989: US04796220 (405 worldwide citation)

An authorized user of the program is allowed to make any number of backup copies of a computer program and to execute each such backup copy on the same authorized machine, but is inhibited from executing either the original or any copy thereof on any other machine. The method is implemented by inclu ...


5
Barrie F Regan: Stent for use following balloon angioplasty. Limbach Limbach & Sutton, January 3, 1989: US04795458 (383 worldwide citation)

A stent for implanting in a blood vessel following balloon angioplasty to prevent restenosis. The stent is a helical coil of a shape memory alloy tape or wire. The coil has a diameter less than that of the blood vessel in which it is to be implanted. The tape or wire has previously been wound to for ...


6
Robert J Blinken, Robert J Blinken Jr, Merle D Garner, William J Koenig, Billy B Oliver: Enhanced dedicated teleconferencing system. Communications Network Enhancement, Peter C Michalos, January 3, 1989: US04796293 (270 worldwide citation)

A method and apparatus for enhancing the operation of a teleconferencing system, utilizes a programmed service computer to drive a bridge which has a plurality of ports for establishing communication with a plurality of conferees. The bridge includes a microprocessor which responds to a plurality of ...


7
Yasusi Niiyama, Kenshi Sugahara: Electrochemical sensor having three layer membrane containing immobilized enzymes. Hitachi, Antonelli Terry & Wands, January 3, 1989: US04795707 (257 worldwide citation)

An electrochemical sensor is formed having a working electrode for detecting hydrogen peroxide surrounded by a cylinder portion, and with an enzymecontaining membrane at its tip. The membrane has a porous layer permeable to hydrogen peroxide between a layer containing an immobilized enzyme capable o ...


8
Claude M Karczmer: Shield assembly for hypodermic injection devices. Bacon & Thomas, January 3, 1989: US04795432 (251 worldwide citation)

An automatic shield assembly for preventing reuse of a hypodermic needle injection device, such as a hypodermic syringe or an intravenous needle. A shield member is spring-biased outwardly towards the sharp end of the needle and maintained in this position by a retainer member which is automatically ...


9
John M Munsch, Mark D Ruby, William J Schnell, Jimmy L Miller: Lancet cartridge. Invictus, January 3, 1989: US04794926 (243 worldwide citation)

Described is a lancet cartridge for drawing blood samples from the finger of a patient which includes a first housing for receiving a lancet disk having a plurality of radially extending lancets, each lancet having a tooth projecting from the end thereof, and a second housing engageable with the fir ...


10
John D Wiedemer: Billing system for computer software. Lathrop & Clark, January 3, 1989: US04796181 (240 worldwide citation)

A computer software security and billing system is disclosed in which the application program is enciphered in accordance with an algorithm driven by a numeric key. The user's computer is provided with a hardware security module and a removable billing module, both of which carry unique codes. A sec ...