1
David E Ferguson: Method of compacting and searching a data index. Amalgamated Software of North America, Spensley Horn Jubas & Lubitz, June 30, 1987: US04677550 (102 worldwide citation)

An improved method for indexing and accessing data stored in a computer storage system, comprising a multi-way tree structure having interconnected branch nodes and leaf nodes. The leaf nodes contain a large number of distinction bits, rather than a smaller number of search keys as known in the prio ...


2
David E Ferguson, Eduardo C Ross: Method of sorting and compressing data. Amalgamated Software of North America, Spensley Horn Jubas & Lubitz, December 28, 1993: US05274805 (75 worldwide citation)

A method for sorting data in a computer data storage system that has particular advantages in implementing a key index tree structure. The sorting method uses buffer-size substrings to sort strings of key records into a linked list structure that can be directly transformed into an index tree. The s ...


3
David E Ferguson: Data sorting method. Amalgamated Software of North America, Spensley Horn Jubas & Lubitz, June 9, 1992: US05121493 (52 worldwide citation)

A method for sorting data in a computer data storage system that has particular advantages in implementing a key index tree structure. The sorting method uses buffer-size substrings to sort strings of key records into a linked list structure that can be directly transformed into an index tree. The s ...


4
David E Ferguson, Eduardo C Ross: Method and apparatus for implementing Q-trees. Amalgamated Software of North America, Fish & Richardson, March 5, 1996: US05497485 (25 worldwide citation)

A method and apparatus for increasing the speed of a search through leaf nodes of an inventive key index tree structure, known as a "Q-tree". The present invention identifies "decision-bits" within leaf node entries and uses these decision-bits to accelerate searches for a particular record or for a ...


5
David E Ferguson, Eduardo C Ross: Method and apparatus for implementing Q-trees. Amalgamated Software of North America, Fish & Richardson P C, September 2, 1997: US05664184 (20 worldwide citation)

A method and apparatus for increasing the speed of a search through leaf nodes of an inventive key index tree structure, known as a "Q-tree". The present invention identifies "decision-bits" within leaf node entries and uses these decision-bits to accelerate searches for a particular record or for a ...


6
David E Ferguson: Non-heuristic decimal divide method and apparatus. Amalgamated Software of North America, Fish & Richardson P C, December 24, 1996: US05587940 (6 worldwide citation)

A method and apparatus for performing decimal division using a computer that does not have the capability to perform single instruction decimal multiplication or division. A divisor is normalized such that the value of the first digit of the divisor is not less than 5. Trial quotient digits within a ...


7
David E Ferguson, Norman A Lindeman: Apparatus for providing enhanced self-resistive specimen heating in dynamic material testing systems and accompanying method for use therein. Dynamic Systems, Michaelson & Associates, Peter L Michaelson, November 21, 2006: US07137306 (4 worldwide citation)

Apparatus and an accompanying method for use in a conventional dynamic material testing system to advantageously provide enhanced self-resistive specimen heating. Specifically, a fixture (400) is added to the system. The fixture has two supporting arms (201, 451), each holding one of two opposing an ...


8
David E Ferguson, Norman A Lindeman: Apparatus for an anvil system that provides enhanced self-resistive specimen heating when used in a dynamic thermo-mechanical material testing system. Dynamic Systems, Michaelson & Associates, Peter L Michaelson, September 19, 2006: US07107857 (1 worldwide citation)

Apparatus for use in a conventional dynamic material testing system to advantageously provide uniform self-resistive specimen heating with enhanced temperature uniformity. Specifically, an anvil stack (300) in an anvil assembly (200) has a foil interface (242) with a composite layer (320A, 320B, 320 ...


9
David E Ferguson: Digital computer for adding and subtracting. Amalgamated Software of North America, Fish & Richardson, May 12, 1998: US05751623 (1 worldwide citation)

A method and apparatus for efficiently adding and subtracting multiple digit decimal numbers represented as a series of 8-bit bytes, each 8-bit byte representing one digit of a decimal number. In accordance with the present invention, numeric values are stored internally within a computer in a new f ...


10
David E Ferguson, Norman A Lindeman: Apparatus for providing enhanced self-resistive specimen heating in dynamic material testing systems and an accompanying method for use therein. Michaelson And Wallace, Parkway 109 Office Center, January 20, 2005: US20050011274-A1

Apparatus and an accompanying method for use in a conventional dynamic material testing system to advantageously provide enhanced self-resistive specimen heating. Specifically, a fixture (400) is added to the system. The fixture has two supporting arms (201, 451), each holding one of two opposing an ...