41
Richard Stepp: Multiple-input four-quadrant multiplier. Siemens Aktiengesellschaft, Jeffrey P Morris, May 19, 1992: US05115409 (110 worldwide citation)

A four-quadrant multiplier based on a Gilbert cell is utilized to multiply several signals by a similar signal. The transistors in two pairs of coupled differential amplifiers of one input terminal of the inner multiplier that is activated like a Gilbert cell by way of a diode-and-transistor section ...


42
Lloyd G Jones, Charles S Yeh: Gravel packing of wells. Mobil Oil Corporation, Alexander J McKillop, Charles J Speciale, George W Hager Jr, May 19, 1992: US05113935 (107 worldwide citation)

Apparatus for gravel packing a wellbore interval having shunt means (i.e. conduits) on the external surface of a sand screen which can selectively deliver a gravel slurry to different levels of the interval during operation. The shunt means is comprised of a variety of differently configured, perfor ...


43
Thomas M Cipolla, Paul W Coteus, Glen W Johnson, Philip Murphy, Christopher W Oden: Apparatus and method for inspection and alignment of semiconductor chips and conductive lead frames. International Business Machines, Perman & Green, May 19, 1992: US05113565 (107 worldwide citation)

A method is described for aligning a contact pattern on an electronic device held by a first movable support, with a bond site pattern on a lead frame held by a second movable support. The method includes the steps of: (a) creating and storing models of a chip's contact pattern and a lead frame's bo ...


44
Paul F Tsuchiya, W Worth Kirkman, John F Weidner: Communications network system using full-juncture and partial-juncture station status information for alternate-path distance-vector routing. The Mitre Corporation, Choate Hall & Stewart, May 19, 1992: US05115495 (107 worldwide citation)

Apparatus and method for routing messages in a communications network having a plurality of communications stations interconnected by a plurality of communication links, and having at least one destination station. Each communications station informs each neighboring communications station of the di ...


45
Peter Rother: Method for processing signals, particularly for oximetric measurements on living human tissue. Hewlett Packard Company, Richard F Schuette, May 19, 1992: US05113861 (106 worldwide citation)

A method is used for processing signals, particularly for oximetric measurements on living human tissue. Spurious signals are suppressed with respect to information signals. The spurious signals have a frequency lying in a first frequency range, and the information signals have a frequency lying in ...


46
Siegfried Hiltebrandt, Johann Wolf: Organ manipulator. Richard Wolf, Cohen Pontani Lieberman & Pavane, May 19, 1992: US05113846 (103 worldwide citation)

An organ manipulator is described for exposing an organ situated in a body cavity to be investigated or treated. The manipulator has a retractor body comprising a multi-joint lever system of articulated arms connected to one another, to be pivotally movable and which can be transformed from a axial ...


47
J P Harmon, George T Kaplinsky: Wiper for ink-jet printhead. Hewlett Packard Company, May 19, 1992: US05115250 (103 worldwide citation)

A rotary wiper for cleaning the orifice plate of a printhead of a thermal ink-jet printer. The wiper includes a plurality of blades which successively wipe contaminants from the orifice plate of the printhead during rotation of the wiper. Apparatus is provided for automatically cleaning the contamin ...


48
George S Hunter, Michael J Hawker: Filter assembly and cartridge therefor. Process Scientific Innovations, Oblon Spivak McClelland Maier & Neustadt, May 19, 1992: US05114572 (102 worldwide citation)

An assembly is provided of a filter bowl (10), a cartridge (12) and a head (11) in which the filter bowl (10) can be removed after it has descended from the filter head (11) through a distance corresponding to only a minor part of the length of the filter cartridge (12). The cartridge (12) is a push ...


49
Ellen L Hahne, Nicholas F Maxemchuk: Fair access of multi-priority traffic to distributed-queue dual-bus networks. AT&T Bell Laboratories, Henry T Brendzel, May 19, 1992: US05115430 (101 worldwide citation)

Bandwidth balancing is accomplished to DQDB networks that handle multi-priority traffic by causing each node to throttle its own rate of transmission in accordance with the priority of the data that the node transmits. In accordance with one approach, each node limits its throughput to the product o ...


50
Hermann Gaisser: Woven multilayer papermaking fabric having increased stability and permeability and method. Wangner Systems Corporation, Cort Flint, May 19, 1992: US05114777 (101 worldwide citation)

A papermaking fabric and method therefor is disclosed which may be used as a support fabric or a carrier fabric for paper material on a papermaking machine. The fabric, designated generally as (A) includes a first layer (B) of warp yarns (32, 34, 36, and 38) extending in a machine direction. A secon ...