Patent Attorney
Kristin J Frost
Reg. No. 50627
Active
Not accepting new clients
Firm
Sigma-Aldrich Corp.
Sigma-Aldrich Corp.
Location
St. Louis, MO 63103
St. Louis, MO 63103
Phone
314-289-8446
314-289-8446
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.