Registered patent attorney

Robert James Hampsch

USPTO Reg. 36155

Firm

Praxair, Inc

Address

39 Old Ridgebury Road

Danbury, CT, 06810

US

Phone

Registered as

Registered patent attorney

Other patent attorneys in Danbury, Connecticut

Browse all Danbury patent attorneys →

Frequently asked

Frequently asked about Robert James Hampsch

  • Is Robert James Hampsch a registered patent attorney?

    Yes. Robert James Hampsch is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 36155). Registration is verified against the USPTO Office of Enrollment and Discipline roster.

  • Where is Robert James Hampsch located?

    Robert James Hampsch's office is in Danbury, Connecticut (06810). Affiliated with Praxair, Inc.

  • What firm does Robert James Hampsch work at?

    Robert James Hampsch is listed as affiliated with Praxair, Inc on the USPTO Office of Enrollment and Discipline practitioner roster.

  • How do I contact Robert James Hampsch?

    Robert James Hampsch's office phone (per the USPTO public roster) is 203-837-2178. Verify availability and intake details directly with the firm before sending privileged materials.

  • Should I prepare anything before contacting a patent attorney?

    Yes — most patent attorneys quote based on a brief. Persoona's intellectual property module generates a prior-art analysis, defensibility scorecard, and a draft USPTO filing package so you arrive with a brief, not a blank slate. Free to run.

Profile sourced from the USPTO OEDCI Practitioner Roster. Persoona did not provide, edit, or curate this data — every field is pulled directly from the public roster.

build 4315ed5 · 2026-05-22 16:01 EDT