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For the Inventor, By the Inventor

Crete, IL, United States of America

Kristine S Siefert

This inventor holds 8 USPTO granted patents. Top assignee: Nalco Chemical Company. Active years: 1991-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kristine S Siefert. Retrieved from https://idiyas.com/inventor/kristine-s-siefert

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

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 3.1

ph-index = 7

Forward Citations = 105(Granted Patents)


Company Filing History:

goldMedal8 out of 1,167 
 
Nalco Chemical Company
 patents

Years Active: 1991-1995

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8 patents (USPTO):Explore Patents
1. 5401420 - Sulfide ion-selective electrodes for control of chemical feed of organic (1995-03-28),
2. 5346627 - Method for removing metals from a fluid stream (1994-09-13),
3. 5338816 - Hydrophobic polyelectrolytes used in removing color (1994-08-16),
4. 5328599 - System using sulfide ion-selective electrodes for control of chemical (1994-07-12),
5. 5283306 - Hydrophobic polyelectrolytes used in removing color (1994-02-01),
6. 5200089 - Pulp and paper mill wastewater color removal (1993-04-06),
7. 5125966 - Process for de-oiling mill sludge (1992-06-30),
8. 5047083 - Process for de-oiling mill scale (1991-09-10),

Title: Innovations of Kristine S Siefert

Introduction

Kristine S Siefert is a notable inventor based in Crete, Illinois, who has made significant contributions to the field of wastewater treatment. With a total of eight patents to her name, she has developed innovative solutions that address environmental challenges.

Latest Patents

One of her latest patents is focused on sulfide ion-selective electrodes for controlling the chemical feed of organic materials in wastewater treatment systems. This invention includes a method for chemical precipitation and removal of metals from wastewater, utilizing an ion-selective sulfide electrode and a reference electrode to measure electrochemical potential in a predetermined range. A controller unit is integrated to automatically manage the chemical precipitant fed into the precipitation tank based on the measured potential. Another significant patent involves a method for removing metals from a fluid stream. This method treats the fluid with a water-soluble ethylene dichloride ammonia polymer, which forms complexes with the metals, allowing for their removal through a filtering device.

Career Highlights

Kristine S Siefert is currently employed at Nalco Chemical Company, where she continues to innovate in the field of chemical engineering and environmental solutions. Her work has been instrumental in developing technologies that enhance the efficiency of wastewater treatment processes.

Collaborations

Throughout her career, Kristine has collaborated with esteemed colleagues such as Pek L Choo and John W Sparapany, contributing to the advancement of her projects and innovations.

Conclusion

Kristine S Siefert's contributions to wastewater treatment through her innovative patents demonstrate her commitment to environmental sustainability and technological advancement. Her work continues to impact the industry positively.

Profile summary based on public USPTO records.
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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