Torben F Christiansen: Method and apparatus for pH recording. Hubbell Cohen Stiefel & Gross, May 24, 1983: US04384586 (253 worldwide citation)

For continuous or intermittent monitoring or recording of the in vivo plasma pH of a patient, the patient's acid base status is established with performance of at least one in vitro determination on a blood sample from the patient, and for a period of some hours thereafter, the patient's in vivo pla ...

Lawrence B Owen, John F Schatz, Usman Ahmed: Method of in-situ retorting of carbonaceous material for recovery of organic liquids and gases. Terra Tek, M Reid Russell, May 24, 1983: US04384613 (249 worldwide citation)

The method of the present invention involves a two-phase process for in-situ retorting and recovery of carbonaceous material contained within typical subterranean tar sand formations, and includes formation of conventional arrays of in-seam ducts, and positioning heating devices to heat a section of ...

Clarence I Justheim: Method of retorting oil shale by velocity flow of super-heated air. Justheim Pertroleum Company, Mallinckrodt & Mallinckrodt, May 24, 1983: US04384614 (241 worldwide citation)

Oil shale is retorted, preferably in situ, by passing velocity flow of super-heated air through one or more conduit-like passages in direct contact with exposed surfaces of oil shale. Kerogen pyrolysis products are recovered by condensation of the vapors and collection of the condensate and by colle ...

William R Horst, William J Hale: Check dispensing terminal. NCR Corporation, J T Cavender, Albert L Sessler Jr, Elmer Wargo, May 24, 1983: US04385285 (182 worldwide citation)

A method and apparatus for issuing negotiable instruments such as checks from a terminal comprising: first means (identification card reader) for identifying an account number against which a monetary amount of a check to be issued by the terminal is to be charged; second means (handwriting transduc ...

Douglas P Zipes: Synchronous intracardiac cardioverter. Medtronic, Robert C Beck, John L Rooney, Joseph F Breimayer, May 24, 1983: US04384585 (178 worldwide citation)

An implantable medical device to deliver cardioverting energy to cardiac tissue in synchrony with detected ventricular depolarizations. The energy renders refractory, areas of the heart associated with a reciprocating or automatic tachycardia, thus reverting these tachyarrhythmias to normal sinus rh ...

Arthur H Rosbury, Judson T Gilbert, Donald C O Connor, Grant A Newland: Modem diagnostic and control system. Racal Data Communications, Jackson Jones & Price, May 24, 1983: US04385384 (174 worldwide citation)

A system for diagnosing and controlling operation of a plurality of modems, some located at a central site and others at various remote sites. A processor located at the central site selectively addresses microprocessor test and control units at each modem over a secondary channel. The microprocesso ...

John F Aspinwall, Ronald A Barrs, Carl S den Brinker, John R Emmett: Battery charger. Redifon Telecommunications, Thames Television, Laurence R Brown, May 24, 1983: US04385269 (154 worldwide citation)

A battery charger is provided which supplies pulses of charging current to a battery and discharges the battery between each charging pulse. The change in the battery terminal voltage over a predetermined period during each charging pulse is measured, and the pulse charging is terminated when a para ...

Naomichi Abe: Method and apparatus for dry etching and electrostatic chucking device used therein. Fujitsu, Staas & Halsey, May 24, 1983: US04384918 (150 worldwide citation)

An electrostatic chucking device is positioned on a supporting base, the temperature of which is maintained at a predetermined value, the device having an insulator, and a pair of plane electrodes on the insulator, and a material being chucked on the bottom surface of the top surface of the insulato ...

Jones W Fong: Process for preparation of microspheres. Sandoz, Gerald D Sharkin, Robert S Honor, Walter F Jewell, May 24, 1983: US04384975 (139 worldwide citation)

Microspheres, prepared by solvent removal from an oil-in-water emulsion using carboxylic acid salt surfactant, e.g., sodium oleate as the emulsifier.

Wilbur F Roper, Thomas B Dellinger: Reduction of the frictional coefficient in a borehole by the use of vibration. Mobil Oil Corporation, C A Huggett, M G Gilman, J F Powers Jr, May 24, 1983: US04384625 (129 worldwide citation)

A deviated borehole is drilled with a rotary drilling technique in which the drill string is vibrated at a suitable frequency and amplitude to reduce the friction of the drill string against the lower side of the borehole and to promote the free movement of the drill string therein.