Twenty-two patents were awarded to Utah inventors on April 9. U.S. patents are granted each Tuesday.

The new patents include:

• Sheet of shingles. Jay S. Timbrel, Ogden; Denise M. Williams, Murray. Filed Aug. 4, 2000. Patent No. 6,367,222.

• Filament wound structural columns for light poles. Clint Ashton, Gunnison. Assigned to Wasatch Technologies Corp., Gunnison. Filed July 26, 1999. Patent No. 6,367,225.

• Dual analog and ratchet wrench. M. Todd Mitchell, Layton. Filed Sept. 8, 2000, a continuation-in-part of Application No. 09/533,890, filed March 22, 2000, which is a continuation-in-part of Patent No. 6,055,888, filed April 23, 1998. Patent No. 6,367,354.

• Ammunition cartridge with differently packed shotshell wad projectile chambers. Chris Lee Billings, Layton. Filed Jan. 9, 2001. Patent No. 6,367,388.

• Method of disposing of animal waste. Tommy D. Masek, Salt Lake City. Filed Nov. 6, 2000. Patent No. 6,367,395.

• Respiratory flow meter and methods of use. Scott A. Kofoed, Bountiful; Kevin Durst, Salt Lake City; Joseph A. Orr, Park City. Assigned to Korr Medical Technologies Inc., Salt Lake City. Filed April 2, 1999. Patent No. 6,367,475.