Patent Attorney
Daniel S Kasten
Reg. No. 45363
Active
Not accepting new clients
Firm
Sigma - Aldrich Co.
Sigma - Aldrich Co.
Location
St. Louis, MO 63103
St. Louis, MO 63103
Phone
314-286-7454
314-286-7454
Registration Type
ATTORNEY
ATTORNEY
Roster
USPTO OED FY25
USPTO OED FY25
Firm and contact info reflects the FY25 roster (last updated September 25).
Attorneys may have changed firms since then — patent filings show their current firm of record.