Inventor

CALLAHAN BRIAN J

US7 patents

⚠️ This page may combine multiple inventors who share the name “CALLAHAN BRIAN J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ACHATES POWER INC

4 patents

US9068498B2Jun 30, 2015

Reduction of ring clipping in two-stroke cycle engines

ACHATES POWER INC5 citations70

US10082099B2Sep 25, 2018

Port edge shape with continuous curvature for improved ring-port interaction and flow area

ACHATES POWER INC0 citations49

US10215129B2Feb 26, 2019

Port edge shape with continuous curvature for improved ring-port interaction and flow area

ACHATES POWER INC0 citations39

US10323563B2Jun 18, 2019

Open exhaust chamber constructions for opposed-piston engines

ACHATES POWER INC0 citations37

HAVENEED COM INC

1 patent

US6904410B1Jun 7, 2005

Online method and system for management of collectibles

HAVENEED COM INC130 citations92

CALLAHAN BRIAN J

1 patent

US8851029B2Oct 7, 2014

Opposed-piston cylinder bore constructions with solid lubrication in the top ring reversal zones

CALLAHAN BRIAN J7 citations78

BETHEL STEVEN J

1 patent

US9482153B2Nov 1, 2016

Oil retention in the bore/piston interfaces of ported cylinders in opposed-piston engines

BETHEL STEVEN J9 citations76