GENEVA, May 6 -- BENHAM, Roger, A. (4500 La Salle St.San Diego, CA 92110) filed a patent application (PCT/US2025/052130) for "COMPOUND EXPANSION ENGINE" on Oct 22, 2025. With publication no. WO/2026/090334, the details related to the patent application was published on Apr 30, 2026.

Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).

Inventor(s): BENHAM, Roger, A. (4500 La Salle St.San Diego, CA 92110)

Abstract: An improved reciprocating engine with compound expansion suitable for power generation and in particular a reciprocating engine with compound, or secondary, expansion, especially suited for the direct inj...