For the Inventor, By the Inventor

Enter assignee name

Loveland, CO, United States of America

Hach Company

USPTO Granted Patents = 223

CIPO Patents = 4

EPO Patents = 56

Trademarks = 71

Forward Citations = 1,356

Loading Chart...

Loading Chart...

209 inventors (with patents filed for the assignee):

Vishnu Vardhanan Rajasekharan (21 out of 22 patents)

Perry A Palumbo (20 out of 29 patents)

David Langley Rick (14 out of 15 patents)

4. Corey Alan Salzer (14 out of 15 patents)

5. Angella Nicholle Greenawalt (11 out of 11 patents)

6. Brian Alan Harmon (11 out of 12 patents)

7. Darren Kent MacFarland (11 out of 11 patents)

8. Ernie R Paoli (11 out of 11 patents)

9. Russell Martin Young (9 out of 11 patents)

10. Dan J Kroll (9 out of 9 patents)

11. Luke Waaler (8 out of 34 patents)

12. Richard Edward Leggett (8 out of 8 patents)

13. Thomas D Wolfe (8 out of 14 patents)

14. Robert D Stream (8 out of 8 patents)

15. Teresa Lynn Swanson (7 out of 7 patents)

Core Competencies:

Manganese Detection

Electrochemical Digestion

Colorimeter Measurement

Predictive Water Quality Models

Wireless Sensor Probes

Square Wave Voltammetry

Monochloramine Measurement

Peracetic Acid Detection

Suspended Solids Measurement

Dissolved Oxygen Measurement

Chlorine Measurement

Liquid Mixing

223 patents: Sort by Forward Citations

1. 12429480 - Manganese detection (2025-09-30),

2. 12416598 - Derived alkalinity (2025-09-16),

3. 12404185 - Process, system, and computer readable storage medium for determining optimal coagulant dosage (2025-09-02),

4. 12399110 - Electrochemical digestion (2025-08-26),

5. 12366522 - Colorimeter optical measurement interference mitigation (2025-07-22),

6. 12326398 - Turbidimeter cleaning (2025-06-10),

7. 12313618 - Predictive model for water quality deterioration (2025-05-27),

8. 12306165 - Probe system with detachable sensor probe that communicates wirelessly (2025-05-20),

9. 12235237 - Square wave voltammetry variable acquisition window (2025-02-25),

10. 12222319 - Repeated cycles square wave voltammetry (2025-02-11),

11. 12216054 - Method for measuring monochloramine with a thiocarbamate indicator and buffer (2025-02-04),

12. 12210007 - Electrochemical cell stirring (2025-01-28),

13. 12163937 - Detection of per and polyfluoroalkyl substances using total organic fluoride (2024-12-10),

14. 12108318 - Dynamic wireless information transmission (2024-10-01),

15. 12044622 - Method for measuring monochloramine with a thiocarbamate indicator and iodide (2024-07-23),

HACH COMPANY is a global leader in water quality analysis and solutions. With over 80 years of experience, HACH provides innovative products, services, and expertise to help customers understand, protect, and manage water resources. Their comprehensive range of water quality testing equipment and instrumentation is trusted by industries, municipalities, and laboratories worldwide to ensure accurate and reliable water analysis results. HACH COMPANY is committed to delivering exceptional customer support and driving advancements in water quality monitoring technology.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

223 Patents

#1 in Loveland, CO

#30 in Colorado

#1,804 in US

#3,721 in the World

Loveland, CO, United States of America

Hach Company

Forward Citations = 1,356

209 inventors:

Vishnu Vardhanan Rajasekharan (21 out of 22 patents)

Perry A Palumbo (20 out of 29 patents)

David Langley Rick (14 out of 15 patents)

4. Corey Alan Salzer (14 out of 15 patents)

5. Angella Nicholle Greenawalt (11 out of 11 patents)

Please report any incorrect information to support@idiyas.com

Loading…