Tersus Assigned Patents & Trademarks

Tersus Environmental’s patents and trademarks reflect the development, protection, and application of proprietary technologies, products, and methods used in in situ remediation of soil and groundwater contamination. These intellectual property assets support the identification, performance, and implementation of treatment approaches developed through applied field experience and technical innovation.

The listings below summarize key patents and registered or pending trademarks associated with Tersus Environmental’s remediation technologies and product offerings.

Patent listings are provided for informational purposes and do not constitute legal advice or a license to practice.

Tersus Assigned Patents
Tersus Environmental’s patents reflect the development and application of proprietary technologies and methods for in situ remediation of soil and groundwater contamination. These patents document technical innovations derived from applied field experience, research, and product development activities.

The patents listed below represent key intellectual property associated with Tersus Environmental’s remediation technologies and treatment approaches.
- US 12,421,135 B2, Metal Powder Mixture as Heat Source for Treating Environmental Medium (Gary M. Birk, P.E. David F. Alden, P.E., and John Sankey, P.Eng) September 23, 2025
- US 12,103,057 B2, Zero-Valent Metal Suspension in Non-Aqueous Phase for Water Remediation, Alden et al. (David F. Alden, P.E. and Gary M. Birk, P.E) October 1, 2024
- US 11,577,231 B2, Enhanced reduction bioremediation method using in-situ alcoholysis
- US 11,491,522 B2, Zero-Valent Metal Suspension in Non-Aqueous Phase for Water Remediation, (Sangho Bang, Ph.D.; David F. Alden, P.E.; Gary M. Birk, P.E.; .Jeffrey H. Harwell, Ph.D.; and Bor Jier Shiau, Ph.D.) September 21, 2021.
- US 11,123,779 B2, Method and a Chemical Composition for Accelerated In Situ Biochemical Remediation, Alden et al. (David F. Alden, P.E.; Gary M. Birk, P.E.; Sangho Bang, Ph.D.; Jeffrey H. Harwell, Ph.D.; and Bor Jier Shiau, Ph.D.) September 21, 2021
- US 9,309,136 B2, Bioremediation of Soil and Groundwater (John Archibald and Gary M. Birk) April 12, 2016
- US 7,708,496 B2, In-Situ Surfactant and Chemical Oxidant Flushing for Complete Remediation of Contaminants and Methods of Using Same, Shiau, Bor-Jier, May 4, 2010
- US 7,677,836 B2, In-Situ Surfactant and Chemical Oxidant Flushing for Complete Remediation of Contaminants and Methods of Using Same, Shiau, Bor-Jier, March 16, 2010
- US 7,364,386 B2, In-Situ Surfactant and Chemical Oxidant Flushing for Complete Remediation of Contaminants and Methods of Using Same, Shiau, Bor-Jier, April 29, 2008
- US 7,021,863 B2, In-Situ Surfactant and Chemical Oxidant Flushing for Complete Remediation of Contaminants and Methods of Using Same, Shiau, Bor-Jier, April 4, 2006
- US 6,913,419 B2, In-Situ Surfactant and Chemical Oxidant Flushing for Complete Remediation of Contaminants and Methods of Using Same, Shiau, Bor-Jier, July 5, 2005

Tersus Trademark List

Tersus Environmental’s trademarks identify proprietary technologies, products, and services developed to support the in situ remediation of soil and groundwater contamination. These marks help distinguish Tersus Environmental’s offerings and reflect our commitment to quality, technical expertise, and consistent performance.

The following is a non-exhaustive list of trademarks owned by Tersus Environmental. When using these marks in publications distributed within the United States, include the appropriate ™ or ® symbol on first use. For publications distributed outside the United States, do not include trademark symbols; instead, use an appropriate trademark attribution notice (for example: Nutrimens and NutriSulfate are trademarks of Tersus Environmental, LLC, registered in the United States and other countries).

The absence of a product or service name or logo from this list does not constitute a waiver of Tersus Environmental’s trademark or other intellectual property rights associated with that name or logo.

Registered US Trademarks	Trademarks
NutriBind® (Serial No. 86904938) Nutrimens® (Serial No. 86033363) Nutrisulfate® (Serial No. 86033330)	EDS-Activator™ EDS-Advanced™ EDS-ER™ EDS-ME™ EDS-QR™	EDS-ZVI™ MicroEVO™ NanoEVO™ TASK™ TersOx™