31
Rhonda S Everson, Michael R Felix, Boyd D Robertson: Asynchronous replication of data changes by distributed update requests. International Business Machines Corporation, Mark A Wurm, Jesse L Abzug, November 9, 1993: US05261094 (162 worldwide citation)

A method of replicating changes made to databases distributed throughout a computer network is described. A first program (TP1) in the Collector node instructs a second program (TP2) in the Collectee node to send all updates to a database since the last conversation. TP2 processes queries to retriev ...


32
Giuseppe Vrespa: Method for fixing prosthesis to bones. Ladas & Parry, November 9, 1993: US05259398 (161 worldwide citation)

In a screw device (10; 80) for fixing prostheses to bones, the threaded shank (14) comprises a core (32, 34) of overall frusto-conical shape. The screw has a cylindrical neck (12) of diameter equal to or greater than the maximum diameter of the thread. This latter is of two different types, namely a ...


33
Richard C Edwards, Michael S Kolesa, Hiroichi Ishikawa: Wafer processing cluster tool batch preheating and degassing apparatus. Materials Research Corporation, Donald F Frei, November 9, 1993: US05259881 (160 worldwide citation)

A wafer processing cluster tool, having one or more load-locks, is provided with one or more batch preheating modules that receive wafers only from the cluster tool transport module at the internal vacuum pressure of the machine. The loading, unloading, handling and processing of wafers in the machi ...


34
Warren Sack, Randy E Bennett: Method and system for interactive computer science testing, anaylsis and feedback. Educational Testing Service, White & Case, November 9, 1993: US05259766 (159 worldwide citation)

Disclosed is a method and system for administering to a student a problem in computer science for testing, analysis and feedback. The student is provided with an item pool of predetermined test problems to be selected by the student. The student inputs a solution in response to the problem selected, ...


35
Sudhir S Dixit: Layered DCT video coder for packet switched ATM networks. GTE Laboratories Incorporated, Lawrence E Monks, November 9, 1993: US05260783 (155 worldwide citation)

A digital video encoder encodes a video frame into a differential video frame for transmission over a packet switched network. The video encoder includes an inter-frame encoder, an intra-frame encoder, and an encoding selector for selecting between the inter-frame and intra-frame encoder depending o ...


36
Richard N Granger, George R Proto: Loop threaded combined surgical needle-suture device. United States Surgical Corporation, Thomas R Bremer, Peter G Dilworth, Rocco S Barrese, November 9, 1993: US05259846 (152 worldwide citation)

A loop threaded needle-suture device is disclosed wherein a surgical needle is provided with a pointed end and a drilled aperture extending axially of the butt end, and a length of flexible suture material is doubled upon itself to form a loop, both free ends of which are attached to the needle in t ...


37
Jean Luc Bens: Endocardiac lead having an active fastening means. ELA Medical, Davis Hoxie Faithfull & Hapgood, November 9, 1993: US05259394 (150 worldwide citation)

An endocardiac lead of the type including a conductive spiral winding 2 placed inside a sheath 1 made of a flexible material being insensitive to body fluids. This spiral winding 2 is electrically connected to an electrode 3 intended for being brought into contact with the inner wall of the heart. T ...


38
Radia J Perlman, Charles W Kaufman: Method of issuance and revocation of certificates of authenticity used in public key networks and other systems. Digital Equipment Corporation, A Sidney Johnston, Albert P Cefalo, Barry N Young, November 9, 1993: US05261002 (146 worldwide citation)

A technique for issuing and revoking user certificates of authenticity in a public key cryptography system, wherein certificates do not need expiration dates, and the inconvenience and overhead associated with routine certificate renewals are minimized or avoided entirely. A Certification Authority ...


39
Hong Li: Pacemaker lead with extendable retractable lockable fixing helix. Siemens Pacesetter, Malcolm J Romano, November 9, 1993: US05259395 (145 worldwide citation)

A body implantable lead including a sheath, an electrode sleeve secured at a distal end of the sheath, a rotor body positioned within the sleeve, a fixing helix secured to a distal end of the rotor body, a torsion spring secured to a proximal end of the rotor body, and a rotation guide formed betwee ...


40
Lucas Y Hui: Adaptive DCT/DPCM video signal coding method. Matsushita Electric Industrial, Wenderoth Lind & Ponack, November 9, 1993: US05260782 (144 worldwide citation)

An input frame of video sequence is partitioned into smaller blocks of pixel data where each block is subjected to an edge detection which examines the activities in the block itself and the surrounding blocks to determine whether the block can be classified as an edge block. If the block is classif ...