JOHN BN SHAW, MD
Marriage and Family Therapists at Cordata Pkwy, Bellingham, WA

4471481, Sep 11, 1984

Feb 11, 1981

6/278494

John L. Shaw - Renton WA
Hans K. Herzog - Bellevue WA

The Boeing Company - Seattle WA

H04J 600

370 85

A data communications system which includes a plurality of terminals TL. sub. 1 -TL. sub. 5) and a data bus (DB), wherein each of the terminals has autonomous access to the data bus. Each terminal includes a receiver (114) which is normally enabled to receive messages on the data bus and which provides a signal (ADA) signifying the absence of messages. A transmitter (120) within each terminal includes a protocol control unit (140) which enables the transmitter to initiate message transmission only upon (i) the detection of an absence of messages on the data bus whose duration substantially equals that of a sync gap that is common to all of the terminals, and (ii) the subsequent detection of an absence of messages on the data bus whose duration substantially equals that of a terminal gap that is unique to the terminal, with the duration of the sync gap being greater than the duration of any terminal gap. Within each protocol control unit, the sync gap is detected by a sync gap timer (160, 162, 164, 166, and 168) and the terminal gap is detected by a termial gap timer (190, 192, 194, 196, and 198) which is enabled (169) by the sync gap timer, with both timers being responsive to signal ADA. In order to limit the rate of message transmission by any terminal, each protocol control unit may also include a transmission interval timer (170, 172, 174, 176, and 178) which enables message transmission only upon the further condition that (iii) a transmission interval has elapsed from a previous message transmission by the terminal, with the duration of the transmission interval being substantially the same for each terminal.

5393472, Feb 28, 1995

Jun 30, 1993

8/086332

John D. Shaw - Seattle WA

C04B 3564, C04B 3502, C01B 3324

264 63

A method of using dicalcium silicate, and particularly dicalcium silicate slag, to produce wollastonite. In a particular embodiment, the method is used for the production of ceramic products, such as wall tile, containing wollastonite. The method includes preparing a batch mix comprising dicalcium silicate slag and a silica source, and preferably a fluxing agent, then firing the batch mix to produce wollastonite. The method can further include adding a binder material and water to the batch mix, and then pressing the resulting batch mix to form a desired shape, prior to firing. Also, a composition, such as a ceramic product, than is produced from a dicalcium silicate slag mixed with a silica source and fired such than the dicalcium silicate in the slag and the silica source undergo a phase change to become wollastonite.