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Five chemical inventions were part of 16 inventions by 39 Utahns that were awarded patents recently by the U.S. Patent Office. Copies of patents are available by number for $3 from Box 9, Patent and Trademark Office, Washington D.C. 20231. Abstracts and classifications are available at the Marriott Library, University of Utah.

- Leroy E. Phipps, St. George. A fishing strike indicator apparatus. Filed April 27, 1995. Patent 5,515,639.- Louis Rangel, Layton. A system for attaching an arrow point to an arrow shaft. Filed Oct. 18, 1994, a continuation of application Jan. 12, 1994. Patent 5,516,117.

- Gregory J. Lang, Ogden, and Bradley D. Harris, Farmington. An air bag module cover with a window. Assigned to Morton Inter-na-tional Inc., Chicago. Filed June 20, 1994. Patent 5,516,143.

- Randall J. Clark, Pleasant View; Bradley W. Smith, Ogden; Kirk H. Rasmussen, West Point, and Leland B. Kort, Lakewood, Colo. Stamped metal toroidal hybrid gas generator with sliding piston. Assigned to Morton International Inc., Chicago. Filed Oct. 12, 1994. Patent 5,516,147.

- Robert G. Kelley, South Jordan; Don G. Giles; Christopher S. Wadium, both of Salt Lake City; Michael R. Avila, West Jordan; Robert F. Kendall, Salt Lake City; Thomas L. Myers, Fountain Valley, Calif.; Mark D. Belser, Long Beach, Calif.; John P. Fuller, Los Angeles, and Michael D. Abar, Corona, Calif. Self-closing sealable valve bag. Assigned to Stone Container Corp., Chicago. Filed May 10, 1994. Patent 5,516,210.

- Owen D. Brimhall, South Jordan. Exoskeleton with kinesthetic feedback and robotic control. Assigned to Technical Research Associates Inc., Salt Lake City. Filed May 10, 1994. Patent 5,516,249.

- Steven R. Benson, Murray. Torque responsive actuation device for a belt drive system. Filed Oct. 17, 1994. Patent 5,516,333.

- Thomas K. Highsmith, North Ogden; Gary K. Lund, Ogden; Reed J. Blau, Richmond; Jerald C. Hinshaw, and Daniel W. Doll, both of Ogden. Gas generating compositions based on metal salts. Assigned to Thiokol Corporation, Ogden. Filed Jan. 10, 1994. Patent 5,516,377.

- Sonia J. Heiber; Charles D. Ebert, and Sirish C. Dave, all of Salt Lake City. Transmucosal delivery of macromolecular drugs. Assigned to TheraTech Inc., Salt Lake City. Filed May 16, 1994, a division of patent 5,346,701. Patent 5,516,523.

- Karin M. E. Caldwell, Salt Lake County; Per J. E. Carlsson, Uppsala, Sweden, and Jenq-Thun Li, Salt Lake City. A method for forming a hydrophilic surface having a specific chemical reactivity on a hydrophobic substrate. Assigned to the University of Utah, Salt Lake City. Filed Aug. 20, 1993. Patent 5,516,703.

- Robert B. Wardle, Logan; W. Wayne Edwards, Tremonton, and Jerald C. Hinshaw, Ogden. Method of producing thermoplastic elastomers having alternate crystalline structure. Assigned to Thiokol Corp., Ogden. Filed July 27, 1990. Patent 5,516,854.

- Mark Pedersen, Kaysville, and H. DeWayne Ashmead, Fruit Heights. Amino acid chelates having improved palatability. Assigned to Albion International Inc., Clearfield. Filed Aug. 23, 1994. Patent 5,516,925.

- Joseph Kover, Jr., Kaysville. Automotive digital light control circuit. Filed Feb. 7, 1994, a continuation-in-part of application Aug. 31, 1992. Patent 5,517,065.

- John B. Cocanour, III, Sandy. Video photometric color system for processing color specific streams. Assigned to the United States as represented by the Secretary of the Interior, Washington, D.C. Filed Aug. 22, 1994. Patent 5,517,237.

- Neldon P. Johnson, American Fork. Modulation method and apparatus for digital communications. Assigned to International Automated Systems Inc., American Fork. Filed Aug. 2, 1994. Patent 5,517,528.

- Erik D. Hammer, Layton. Liners for tool boxes. Filed Mar. 3, 1994. Design patent 369,678.