1
Paul Kobus Jr: Software usage authorization system with key for decrypting/re-encrypting/re-transmitting moving target security codes from protected software. Computerized Data Ssytems for Mfg, LaValle D Ptak, September 5, 1989: US04864494 (252 worldwide citation)

A computer based function control system is particularly suited for use as a software security device on the highly popular personal computers or a micro-processor driven function. The system includes an encrypted security message uniquely encoded at predetermined locations within the software or fu ...


2
George H Rovin: IC card system with removable IC modules. LaValle D Ptak, September 17, 1991: US05049728 (223 worldwide citation)

An IC card is disclosed having expanded on line utilization. The card includes a standard fixed microprocessor embedded in the plastic with exposed terminals for electrical interconnection with a standard card reader. The card, however, is modified by providing parallel data and control line bus con ...


3
Donald D Schwellenbach: LaValle D Ptak, April 21, 1981: US04262549 (167 worldwide citation)

A variable mechanical vibrator includes a first eccentric weight fixed to a rotatably mounted shaft. A second eccentric weight is rotatably mounted on the shaft, and the two weights are rotated together under control of mating engagement abutments, one carried by the shaft and one carried by or comp ...


4
Roger D McLean: Ruggedized calculator. LaValle D Ptak, October 27, 1987: US04703161 (167 worldwide citation)

This invention provides a ruggedized calculator having shock-absorbant layers around a relatively unbreakable hard plastic case. Flotation cells enable this unit to float and various seals render it dust-proof and water-tight. Power can be selectively supplied from a solar unit or rechargeable batte ...


5
Bob Stardust, Richard L Maggio: Automated method and apparatus for playing card sequencing, with optional defect detection. LaValle D Ptak, June 11, 2002: US06403908 (157 worldwide citation)

An automated method and apparatus for sequencing and/or inspecting decks of playing cards is presented. The method and apparatus utilizes pattern recognition technology or other image comparison technology to compare one or more images of a card with memory containing known good images of a complete ...


6
Dale J Retter: Combination computer keyboard and mouse data entry system. LaValle D Ptak, April 17, 1990: US04917516 (146 worldwide citation)

A data input device particularly suited for computers includes a housing which also contains a computer mouse. The mouse functions are executed by moving the entire housing member, and the fingers never move away from their constant "home" key positions for the data input keys. The normal left and r ...


7
Bradford O Van Ness, Dan G Weimer: Power failure detection and restart system. Engineered Systems, LaValle D Ptak, November 18, 1980: US04234920 (124 worldwide citation)

A power failure detection and restart system for use with a microprocessor (microcomputer) control system includes first and second cascaded voltage comparators, the first of which responds to a drop in the supply voltage supplied to the microprocessor to produce an output pulse causing a software f ...


8
William F McWhortor: System and method for enhancing detection of counterfeit financial transaction documents. LaValle D Ptak, December 6, 1994: US05371798 (117 worldwide citation)

A financial transaction document, such as a check, is manufactured by dividing the clear band of the document into two parallel portions. The first portion is printed with ferrous loaded ink to produce the standard MICE encoded financial information currently employed in such transaction documents. ...


9
Richard Takahashi, Daniel N Heer: Secure memory management unit for microprocessor. VLSI Technology, LaValle D Ptak, October 20, 1998: US05825878 (90 worldwide citation)

A secure embedded memory management unit for a microprocessor is used for encrypted instruction and data transfer from an external memory. Physical security is obtained by embedding the direct memory access controller on the same chip with a microprocessor core, an internal memory, and an encryption ...


10
Thomas P Goth: Tamper-evident fusion bonded pull-tab induction foil lining system for container closures. Top Seal, LaValle D Ptak, March 30, 1993: US05197618 (80 worldwide citation)

A tamper-evident multiple layer induction foil liner for sealing the opening of a container comprises a "sandwich" having a first layer in the form of a fusion-bond heat seal polymer. This heat seal polymer is fusion bonded to the lip of the container opening to secure the liner to the opening. The ...



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