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Montreal, Canada

Chemetics International Company, Ltd.

USPTO Granted Patents = 13

Forward Citations = 284

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22 inventors (with patents filed for the assignee):

Judith G Ulan (3 out of 3 patents)

Zbigniew Twardowski (2 out of 5 patents)

Thomas S Drackett (2 out of 7 patents)

4. Raymond E Alford (2 out of 2 patents)

5. Felix M Mok (2 out of 2 patents)

6. Kenneth R Maycock (2 out of 2 patents)

7. J David Genders (1 out of 29 patents)

8. Riad A Al-Samadi (1 out of 11 patents)

9. Derek Pletcher (1 out of 3 patents)

10. Norman L Weinberg (1 out of 32 patents)

11. Frederick W Jones (1 out of 4 patents)

12. Frank Smith (1 out of 3 patents)

13. Deceased Warren (1 out of 1 patent)

14. Trevor I Tenn (1 out of 1 patent)

15. Cheung K Li Kwok Cheong (1 out of 1 patent)

13 patents: Sort by Forward Citations

1. 5858240 - Nanofiltration of concentrated aqueous salt solutions (1999-01-12),

2. 5700350 - Processes of retaining chelant-containing effluent within pulp bleach (1997-12-23),

3. 5681447 - Removal of trace metal and metalloid species from brine (1997-10-28),

4. 5618437 - Process for removing sulphate from aqueous solution (1997-04-08),

5. 5587083 - Nanofiltration of concentrated aqueous salt solutions (1996-12-24),

6. 5358609 - Electrolytic production of hydrogen peroxide using bipolar membranes (1994-10-25),

7. 5324499 - Fluoride removal from sulphuric acid (1994-06-28),

8. 5246551 - Electrochemical methods for production of alkali metal hydroxides (1993-09-21),

9. 5112216 - Pulp mill gas combustion process (1992-05-12),

10. 5093089 - Process for the separation of sulphate (1992-03-03),

11. 5082645 - Waste acid recovery process (1992-01-21),

12. 5028396 - Apparatus formed of high silicon chromium/nickel in steel in the (1991-07-02),

13. 5017276 - Metal electrodes for electrochemical processes (1991-05-21),

Chemetics International Company, Ltd. is a leading global provider of engineering and project management services for the chemical industry. With a track record of successful projects worldwide, Chemetics specializes in the design, construction, and operation of chemical plants and production facilities. Their team of experts offers innovative solutions to optimize processes and increase efficiency for their clients.

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

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USPTO Data Jan 1 1976 - Dec 16 2025

13 Patents

#65 in Montreal

#1,108 in Canada

#43,635 in the World

Montreal, Canada

Chemetics International Company, Ltd.

Forward Citations = 284

22 inventors:

Judith G Ulan (3 out of 3 patents)

Zbigniew Twardowski (2 out of 5 patents)

Thomas S Drackett (2 out of 7 patents)

4. Raymond E Alford (2 out of 2 patents)

5. Felix M Mok (2 out of 2 patents)

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