Patent Attorney Sydney R Kokjohn

USPTO Data

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Reg. No.:63868
Firm/Company:McDonnell Boehnen Hulbert & Berghoff, LLP
Address:Chicago, IL 60606-6709
Last Updated:2026-04-05

Public Data

This information is obtained from searching the Internet and may be out of date or incorrect.

Firm/Company: Patent Attorneys | Intellectual Property | Trademark Law | MBHB - MBHB
Other info: LinkedIn Profile
Firm Profile
Last Updated:2026-02-11

Top Applicants

This practitioner has been affiliated with the following applicants over the past 10 years.

Applicant Count
Donaldson Company, Inc. 899
UNIVERCELLS TECHNOLOGIES S.A. 23
Donaldson Filtration Deutschland GmbH 7
IFIL.USA, LLC 3
Castrol Limited 2
Isolere Bio, Inc. 2
BOFA International Limited 2
Donaldson Company,Inc. 1
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