Registered patent attorney
Donald T Black
Firm
Praxair, Inc.
Address
10 Riverview Drive
Danbury, CT, 06810
US
Phone
Registered as
Registered patent attorney
Other attorneys at Praxair, Inc.
Other patent attorneys in Danbury, Connecticut
- James P. BreenUSPTO Reg. 75235
- Thelma A Chen ClelandMannkind Corp.
- Nilay S DalalUSPTO Reg. 56069
- Jack E HakenUSPTO Reg. 26902
- Robert James HampschPraxair, Inc
- Marylin KlostyUSPTO Reg. 18137
- Robert John KrausRobert J. Kraus
- Brian A LemmPitney Bowes Inc.
Frequently asked
Frequently asked about Donald T Black
Is Donald T Black a registered patent attorney?
Yes. Donald T Black is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 27999). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Donald T Black located?
Donald T Black's office is in Danbury, Connecticut (06810). Affiliated with Praxair, Inc..
What firm does Donald T Black work at?
Donald T Black is listed as affiliated with Praxair, Inc. on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Donald T Black?
Donald T Black's office phone (per the USPTO public roster) is 203-837-2669. 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.