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For the Inventor, By the Inventor

Baltimore, MD, United States of America

Environmental Technologies Group, Inc.


USPTO Granted Patents = 14

Forward Citations = 358

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22 inventors (with patents filed for the assignee):

goldMedal Glenn E Spangler (6 out of 14 patents)

silverMedal Julio A Reategui (4 out of 5 patents)

bronzeMedal Allan T Bacon (4 out of 4 patents)

4.  Donald N Campbell (3 out of 12 patents)

5.  Robert C Davis, Jr (2 out of 6 patents)

6.  Richard C Getz (2 out of 2 patents)

7.  Peter C Stroosnyder (2 out of 2 patents)

8.  John P Carrico (1 out of 2 patents)

9.  Joseph L Mangum (1 out of 1 patent)

10.  Jesse C Patton (1 out of 1 patent)

11.  Kishore N Vora (1 out of 4 patents)

12.  John P Carrico, Jr (1 out of 2 patents)

13.  Eugene F Fafaul (1 out of 1 patent)

14.  Joseph E Roehl (1 out of 1 patent)

15.  Alvin Dorman (1 out of 1 patent)


14 patents:

1. 5830344 - Disposable sensor for metal analysis and method of using same (1998-11-03),
2. 5587581 - Method and an apparatus for an air sample analysis (1996-12-24),
3. 5554846 - Apparatus and a method for detecting alarm molecules in an air sample (1996-09-10),
4. 5338931 - Photoionization ion mobility spectrometer (1994-08-16),
5. 5283199 - Chlorine dioxide monitor based on ion mobility spectrometry with (1994-02-01),
6. 5234838 - Ammonia monitor based on ion mobility spectrometry with selective dopant (1993-08-10),
7. 5095206 - Method and apparatus for improving the specificity of an ion mobility (1992-03-10),
8. 5083019 - Preconcentrator for ion mobility spectrometer (1992-01-21),
9. 5053343 - Selective ionization of gas constituents using electrolytic reactions (1991-10-01),
10. 5032721 - Acid gas monitor based on ion mobility spectrometry (1991-07-16),
11. 5021654 - All ceramic ion mobility spectrometer cell (1991-06-04),
12. 4950893 - Method and apparatus for enhanced ion spectra generation and detection (1990-08-21),
13. 4933285 - Multiple monolayers of polymeric linkages on a solid phase for (1990-06-12),
14. 4928033 - Thermionic ionization source (1990-05-22),
Company Overview
Environmental Technologies Group, Inc., based in Baltimore, MD, specializes in innovative solutions aimed at environmental sustainability. The company focuses on developing advanced technologies for waste management, pollution control, and resource recovery. With a commitment to enhancing ecological health, ETG integrates cutting-edge research in environmental science and engineering to create effective systems that address pressing environmental challenges. Their expertise spans various sectors, contributing to cleaner and more sustainable industrial practices.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

14 Patents

#37 in Baltimore, MD

#309 in Maryland

#22,319 in US

#42,249 in the World

Baltimore, MD (US)
Baltimore, MD, United States of America

Environmental Technologies Group, Inc.

Forward Citations = 358

22 inventors:

goldMedal Glenn E Spangler (6 out of 14 patents)

silverMedal Julio A Reategui (4 out of 5 patents)

bronzeMedal Allan T Bacon (4 out of 4 patents)

4.  Donald N Campbell (3 out of 12 patents)

5.  Robert C Davis, Jr (2 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Environmental Technologies Group, Inc.. Retrieved from https://idiyas.com/company/environmental-technologies-group

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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