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  • Zimmerman, P., U.S. Patent 7457758, “Method and apparatus for generating standardized carbon emission reduction credits,” U.S. Patent and Trademark Office, November 25, 2008.

  • Zimmerman, P., U.S. Patent 7415418, “Method and apparatus for generating standardized environmental benefit credits,” U.S. Patent and Trademark Office, August 19, 2008.

  • Zimmerman, P., U.S. Patent 5410918, “Ambient Air Sampler,” U.S. Patent and Trademark Office, May 2, 1995.

  • Zimmerman, P., U.S. Patent 5265618, “System for Measuring Metabolic Gas Emissions from Animals,” U.S. Patent and Trademark Office, November 30, 1993.

  • Zimmerman, P., U.S. Patent 5269659, “Air Sampling Pump System,” U.S. Patent and Trademark Office, December 14, 1993.

  • Zimmerman, P., U.S. Patent US20170013802A1;l US8307785B2 “Modular livestock feed system for measuring animal intake and monitoring animal health ,” U.S. Patent and Trademark Office, July 26, 2019.

  • Zimmerman, P., Zimmerman, S. U.S. Patent US10085419 “Modular livestock feed system for measuring animal intake and monitoring animal health ,” U.S. Patent and Trademark Office, October 2, 2018

  • Zimmerman, P., Zimmerman, S., WO2011130538A2 PCT “Modular livestock feed system for measuring animal intake and monitoring animal health," World Intellectual Property Organization, October 20, 2011

  • Zimmerman, P., New Zealand Patent 27, "Apparatus for measuring methane and carbon dioxide levels in a ruminant's breath and providing supplements accordingly," New Zealand Patent Office, May 23, 2013

  • Zimmerman, P., Denmark Patent 602009017658.70, "Method and system for monitoring and reducing ruminant methane production," Danish Patent Office, July 31, 2013

  • Zimmerman, P., Canada Patent 2725380, "Method and system for monitoring and reducing ruminant methane production," Canadian Patent Office, August 20, 2013

  • Zimmerman, P., Netherlands Patent 2291072, "Method and system for monitoring and reducing ruminant methane production," Netherlands Patent Office, July 31, 2013

  • Zimmerman, P., Great Britain Patent 2291072, "Method and system for monitoring and reducing ruminant methane production," Great Britain Patent Office, July 31, 2013

  • Zimmerman, P., Sweden Patent 2291072, "Method and system for monitoring and reducing ruminant methane production," Swedish Patent Office, July 31, 2013

  • Zimmerman, P., European Patent 2291072, "Method and system for monitoring and reducing ruminant methane production," European Patent Office, July 31, 2013

  • Zimmerman, P., Zimmerman, S., Ireland Patent 2558855, "Method and system for monitoring and reducing ruminant methane production," Intellectual Property office of Ireland, October 8, 2014

  • Zimmerman, P., Zimmerman, S., Australia Patent 2011239541, "Method and system for monitoring and reducing ruminant methane production," December 11, 2014

  • Zimmerman, P., Zimmerman, S., Canada Patent 2796450, "Method and system for monitoring and reducing ruminant methane production," October 25, 2016

  • Zimmerman, P., Zimmerman, S., New Zealand Patent 602979, "Method and system for monitoring and reducing ruminant methane production," June 19, 2018

  • Zimmerman, P., Zimmerman, S., China Patent 2558855, "Method and system for monitoring and reducing ruminant methane production," October 8, 2014

  • Zimmerman, P., Zimmerman, S., China Patent 2558855, "Method and system for monitoring and reducing ruminant methane production," October 8, 2014

  • Zimmerman, P., Zimmerman, S., Netherlands Patent 2558855, "Method and system for monitoring and reducing ruminant methane production," October 8, 2014

  • Zimmerman, P., Zimmerman, S., Great Britain Patent 2558855, "Method and system for monitoring and reducing ruminant methane production," October 8, 2014

  • Zimmerman, P., Zimmerman, S., European Patent 2558855, "Method and system for monitoring and reducing ruminant methane production," October 8, 2014

  • Zimmerman, P., Zimmerman, S., Denmark Patent 2558855, "Method and system for monitoring and reducing ruminant methane production," October 8, 2014

  • Zimmerman, P., Zimmerman, S., Germany Patent 2558855, "Method and system for monitoring and reducing ruminant methane production," October 8, 2014

  • Zimmerman, P., Zimmerman, S., France Patent 2558855, "Method and system for monitoring and reducing ruminant methane production," October 8, 2014

  • Zimmerman, P., Zimmerman, S., Finland Patent 2558855, "Method and system for monitoring and reducing ruminant methane production," October 8, 2014

  • Zimmerman, P., Zimmerman, S., Sweden Patent 2558855, "Method and system for monitoring and reducing ruminant methane production," October 8, 2014
  • Zimmerman, P., Zimmerman, S., Brazil Patent 11 2012 026452-4, "Method and system for monitoring and reducing ruminant methane production," June 19th 2020
  • Zimmerman, P., France Patent 2709442, "Vaccine and health-related applications for ruminant breath monitoring system," March 4, 2015

  • Zimmerman, P., Sweden Patent 2709442, "Vaccine and health-related applications for ruminant breath monitoring system," March 4, 2015

  • Zimmerman, P., Netherlands Patent 2709442, "Vaccine and health-related applications for ruminant breath monitoring system," March 4, 2015

  • Zimmerman, P., European Patent 2709442, "Vaccine and health-related applications for ruminant breath monitoring system," March 4, 2015

  • Zimmerman, P., Great Britain Patent 2709442, "Vaccine and health-related applications for ruminant breath monitoring system," March 4, 2015

  • Zimmerman, P., Denmark Patent 602012005725.40, "Vaccine and health-related applications for ruminant breath monitoring system," March 4, 2015