As of March 2026, the Geyser Patent Attorney Directory contains 42 patent practitioners with verified filing records in Combustion Apparatus (CPC F23). These practitioners have filed a combined 5 patent applications, of which 4 have been granted, a 80% allowance rate.
How 42 Combustion Apparatus practitioners score on PatentFit
Annual patent filings in CPC F23
Firms with the most Combustion Apparatus patent filings
Search the full Geyser directory to see individual practitioners ranked by PatentFit Score for your specific technology.
Search Combustion Systems Attorneys on GeyserPatent filings in burner technology, furnaces, and incineration systems.
View CPC definition ↗As of March 2026, the Geyser Patent Attorney Directory database contains 42 patent practitioners with verified filing records in Combustion Apparatus (CPC F23). These practitioners have filed a combined 5 patent applications in this technology area, with 4 granted (80% allowance rate).
The allowance rate for patent applications classified under Combustion Apparatus (CPC F23) is 80% in our database. The USPTO-wide average is approximately 61.6%. This above-average rate suggests favorable prosecution conditions in this technology area.
The Geyser Patent Attorney Directory analyzes 42 practitioners with proven filing records in Combustion Apparatus. Of these, 0 have PatentFit Scores rated "Strong" or "Exceptional," indicating deep specialization. You can search for your specific technology match on our directory.
PatentFit is a composite score (0-100) measuring how well a practitioner's actual filing record aligns with a specific technology area. It combines Specialization Depth (35%), Allowance Rate (25%), Filing Recency (20%), and Experience (20%). Full methodology at https://patentgeyser.com/methodology.
No. Patent practitioners are registered with the USPTO, a federal agency with nationwide jurisdiction. A patent attorney in any U.S. state can file and prosecute patent applications for inventors located anywhere. What matters is their proven expertise in your specific technology area.