For the Inventor, By the Inventor

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Union, NJ, United States of America

The Graver Company

USPTO Granted Patents = 35

CIPO Patents = 2

Forward Citations = 522

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26 inventors (with patents filed for the assignee):

Eli Salem (15 out of 17 patents)

Robert Kunin (11 out of 22 patents)

Donald J Butterworth (4 out of 8 patents)

4. Michael J O'Brien (3 out of 22 patents)

5. Alfonse J Soriente (3 out of 3 patents)

6. Thomas A Davis (3 out of 10 patents)

7. George C Flynn (3 out of 5 patents)

8. Kurt Bozenmayer (2 out of 5 patents)

9. Bruce L Libutti (2 out of 13 patents)

10. Frederick P Chlanda (2 out of 31 patents)

11. Jian-Ping Huang (2 out of 2 patents)

12. Christopher Andreola (1 out of 2 patents)

13. Leo Ryan (1 out of 1 patent)

14. Frank Matunas (1 out of 1 patent)

15. Marvin Lane (1 out of 1 patent)

35 patents: Sort by Forward Citations

1. 5643968 - Process for producing ion exchange membranes, and the ion exchange (1997-07-01),

2. 5624965 - Arylenedialkylidene polymers for high performance ion exchange membranes (1997-04-29),

3. 5601704 - Automatic feedback control system for a water treatment apparatus (1997-02-11),

4. 5403492 - Ion exchange resin having dual morphology (1995-04-04),

5. 5397477 - Ion exchange resin having dual morphology (1995-03-14),

6. 5376278 - Filter and a method for separating charged particles from a liquid stream (1994-12-27),

7. 5346624 - Method and apparatus for treatment of aqueous solutions (1994-09-13),

8. 5250159 - Bipolar membrane stack and method for producing acid and monovalent base (1993-10-05),

9. 5212205 - Regeneration of deep bed condensate polishers (1993-05-18),

10. 5207905 - Baffle assembly for air and water backwash of a media filter (1993-05-04),

11. 5207879 - Bipolar membrane stack and method for production of low chloride sodium (1993-05-04),

12. 5196122 - External regeneration system for mixed bed ion exchangers (1993-03-23),

13. 5192446 - Cation exchange resins having an enhanced capacity for iron oxides (1993-03-09),

14. 5126052 - Condensate polishing system incorporating a membrane filter (1992-06-30),

15. 5114596 - Backwash method and apparatus (1992-05-19),

The Graver Company is a leading provider of Industrial Filtration and Separation Solutions. With over 70 years of experience, Graver specializes in manufacturing and supplying filters, cartridges, and filtration systems for a wide range of industries including chemical processing, water and wastewater treatment, oil and gas, and pharmaceuticals. Our innovative products, combined with exceptional customer service, ensure reliable and efficient filtration solutions for our clients.

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Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

35 Patents

#3 in Union, NJ

#387 in New Jersey

#9,420 in US

#18,608 in the World

Union, NJ, United States of America

The Graver Company

Forward Citations = 522

26 inventors:

Eli Salem (15 out of 17 patents)

Robert Kunin (11 out of 22 patents)

Donald J Butterworth (4 out of 8 patents)

4. Michael J O'Brien (3 out of 22 patents)

5. Alfonse J Soriente (3 out of 3 patents)

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