1
Jack J Stiffler, Michael J Budwey, James M Nolan: Memory back-up system. Sequoia Systems, Wolf Greenfield & Sacks, March 31, 1987: US04654819 (304 worldwide citation)

Apparatus for maintaining duplicate copies of information stored in fault-tolerant computer main memories is disclosed. A non write-through cache memory associated with each of the system's processing elements stores computations generated by that processing element. At a context switch, the stored ...


2
Jack J Stiffler, Michael J Budwey, James M Nolan Jr: Memory back up system with one cache memory and two physically separated main memories. Sequoia Systems, Wolf Greenfield & Sacks, April 4, 1989: US04819154 (138 worldwide citation)

Apparatus for maintaining duplicate copies of information stored in fault-tolerant computer main memories is disclosed. A non write-through cache memory associated with each of the system's processing elements stores computations generated by that processing element. At a context switch, the stored ...


3
Jack J Stiffler, Richard A Karp, James M Nolan Jr, Michael J Budwey, David A Wallace: Modular computer system. Sequoia Systems, Wolf Greenfield & Sacks, November 20, 1984: US04484273 (123 worldwide citation)

A multi-processor computer system is disclosed in which processing elements, memory elements and peripheral units can be physically added and removed from the system without disrupting its operation or necessitating any reprogramming of software running on the system. The processing units, memory un ...


4
Jack J Stiffler: Main memory system and checkpointing protocol for fault-tolerant computer system. Texas Micro, Wolf Greenfield & Sacks P C, January 26, 1999: US05864657 (86 worldwide citation)

A mechanism for maintaining a consistent, periodically updated state in main memory without constraining normal computer operation is provided, thereby enabling a computer system to recover from faults without loss of data or processing continuity. In a typical computer system, a processor and input ...


5
Jack J Stiffler, Richard A Karp, James M Nolan Jr, Michael J Budwey, David A Wallace: Modular computer system. Sequoia Systems, Wolf Greenfield & Sacks, August 26, 1986: US04608631 (74 worldwide citation)

A multi-processor computer system is disclosed in which processing elements, memory elements and peripheral units can be physically added and removed from the system without disrupting its operation or necessitating any reprogramming of software running on the system. The processing units, memory un ...


6
Jack J Stiffler: Remote checkpoint memory system and protocol for fault-tolerant computer system. Texas Micro, Wolf Greenfield & Sacks P C, April 7, 1998: US05737514 (65 worldwide citation)

A mechanism for maintaining a consistent, periodically updated state in main memory without constraining normal computer operation is provided, thereby enabling a computer system to recover from faults without loss of data or processing continuity. In this invention, a first computer includes a proc ...


7
Jack J Stiffler, Michael J Budwey, James M Nolan Jr: Self-checking computer circuitry. Sequoia Systems, Wolf Greenfield & Sacks, September 10, 1985: US04541094 (56 worldwide citation)

Circuitry for a fault-tolerant computer is disclosed which circuitry is constructed in two identical halves. Each half, by itself, is not a functionally-complete circuit, however, the two identical halves can be connected together to provide a functionally-complete circuit. Each of the two circuit h ...


8
Jack J Stiffler, James M Nolan, Peter Mark, David Harvey: Shared computer resource allocation system having apparatus for informing a requesting computer of the identity and busy/idle status of shared resources by command code. Sequoia Systems, Wolf Greenfield & Sacks, May 19, 1992: US05115499 (48 worldwide citation)

Computer system resources shared by several central processing units are allocated by allowing one processing unit to temporarily gain exclusive access to a particular shared resource. Access to a particular resource is controlled by a memory location which contains information representing the curr ...


9
Jack J Stiffler: Main memory system and checkpointing protocol for fault-tolerant computer system. Texas Micro, Wolf Greenfield & Sacks P C, July 28, 1998: US05787243 (47 worldwide citation)

A mechanism for maintaining a consistent state in main memory without constraining normal computer operation is provided, thereby enabling a computer system to recover from faults without loss of data or processing continuity. In a typical computer system, a processor and input/output elements are c ...


10
Joris J Wils, Beth K Miaoulis, Jack J Stiffler: Integrated procedure for partitioning network data services among multiple subscribers. EMC Corporation, The Law Offices of Paul E Kudirka, October 2, 2007: US07277953 (46 worldwide citation)

A method and apparatus for partitioning network data services among multiple subscribers uses information stored in several tables to define a plurality of independent networks where each independent network comprises a set of access ports and a unique set of destination addresses and is logically s ...