1
Stephen B Weinstein: Protection system for intelligent cards. American Express Company, Gottlieb Rackman and Reisman, June 5, 1984: US04453074 (384 worldwide citation)

There is disclosed a protection system for intelligent cards. Each card has stored in it a code which is the encryption of a concatenation of a user secret password and a common reference text. The encryption is derived by an initialization terminal which uses the private key associated with the pub ...


2
Robert S Molday: Magnetic iron-dextran microspheres. Canadian Patents and Development, Wenderoth Lind & Ponack, June 5, 1984: US04452773 (348 worldwide citation)

The invention relates to colloidal sized particles composed of magnetic iron oxide (Fe.sub.3 O.sub.4) coated with a polysaccharide, preferably dextran, or a derivative thereof having pendant functional groups. The particles have a magnetic moment, are electron dense, and are stable and non-aggregati ...


3
Francis C Usher: Surgical mesh and method. Fulbright & Jaworski, June 5, 1984: US04452245 (293 worldwide citation)

Disclosed is a continuously knitted tubular surgical mesh of monofilament threads free of water-leachable irritant impurities and physiologically inert even in the presence of infection, the threads being unattached at their points of crossing each other. Also disclosed are methods of using the surg ...


4
Robert F Bader, Dennis P Kerkoff: Surgical instrument. Leo R Carroll, June 5, 1984: US04452246 (279 worldwide citation)

A surgical instrument is provided which has independent capabilities of operating as a surgical needleholder for suturing operations, and as a surgical cutting device for severing the suture thread. The instrument of the invention may be operated as a conventional needleholder and, to that end, it h ...


5
Blaine D Gaither, William W Farley IV, Albert Johnson, Brian L Parker: Extended address generating apparatus and method. Burroughs Corporation, Nathan Cass, Kevin R Peterson, David G Rasmussen, June 5, 1984: US04453212 (228 worldwide citation)

Address generating apparatus which uses narrow data paths for generating a wide logical address and which also provides for programs to access very large shared data structures outside their normally available addressing range and over an extended range of addresses. Selective indexed addressing is ...


6
John S Kent: Cholesterol matrix delivery system for sustained release of macromolecules. Syntex, Ellen J Buckles, Tom M Moran, Alan M Krubiner, June 5, 1984: US04452775 (221 worldwide citation)

Delivery systems for releasing macromolecular active agents to a body site at a controlled rate for a prolonged period of time, comprising a cholesteric matrix permeable to passage of the macromolecular active agent by diffusion, are disclosed. The cholesteric matrix comprises cholesterol powder and ...


7
Leonard Seglin, Erik Saller: Recovery of hydrocarbons from deep underground deposits of tar sands. Intercontinental Econergy Associates, Milton Zucker, June 5, 1984: US04452491 (180 worldwide citation)

A method is provided for mining deep tar sand deposits which minimizes energy losses and surface subsidance due to cavity collapse. A well is sunk through the overburden and tar sands deposit into the bedrock below the deposit; the well is sealed and pressurized with steam and inert gas. Hot aqueous ...


8
Robert Reid: Central processing apparatus for fault-tolerant computing. Stratus Computer, Lahive & Cockfield, June 5, 1984: US04453215 (143 worldwide citation)

A fault-tolerant computer system provides information transfers between the units of a computing module, including a processor unit and a memory unit and one or more peripheral control units, on a bus structure common to all the units. Information-handling parts of the system, both in the bus struct ...


9
Alain Carpentier, Ernest Lane: Supra-annular aortic valve. American Hospital Supply Corporation, Gordon L Peterson, June 5, 1984: US04451936 (139 worldwide citation)

An aortic prosthetic valve for supra-annular implantation comprising a valve body of generally annular configuration and a valve element movably mounted on the valve body for opening and closing the valve. The valve body terminates in a generally annular base surface, and a scalloped suture ring cir ...


10
Zapata M Valentin: System for the obtaining of energy by fluid flows resembling a natural cyclone or anti-cyclone. Wenderoth Lind & Ponack, June 5, 1984: US04452046 (124 worldwide citation)

A system for obtaining energy by means of fluid flows resembling those of a natural cyclone or anti-cyclone comprises a cyclonic conversion tower constituted by a group of convectors all situated round an axis toward which there are directed vortical membranes or screens contained in trumpet-shaped ...