Callahan; Brian J.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Callahan; Brian J..The latest application filed is for "port edge shape with continuous curvature for improved ring-portinteraction and flow area".

Company Profile

1.9.8

Callahan; Brian J. - San Diego CA
Callahan, Brian J. - San Antonio TX

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Open exhaust chamber constructions for opposed-piston engines Grant 10,323,563 - Zermeno Benitez , et al.	2019-06-18
Port edge shape with continuous curvature for improved ring-port interaction and flow area Grant 10,215,129 - Callahan Feb	2019-02-26
Port edge shape with continuous curvature for improved ring-port interaction and flow area Grant 10,082,099 - Callahan September 25, 2	2018-09-25
Port Edge Shape With Continuous Curvature For Improved Ring-portinteraction And Flow Area App 20180045136 - CALLAHAN; BRIAN J.	2018-02-15
Port Edge Shape With Continuous Curvature For Improved Ring-port Interaction And Flow Area App 20180045135 - CALLAHAN; BRIAN J.	2018-02-15
Open Exhaust Chamber Constructions For Opposed-piston Engines App 20170321591 - ZERMENO BENITEZ; RODRIGO ; et al.	2017-11-09
Oil retention in the bore/piston interfaces of ported cylinders in opposed-piston engines Grant 9,482,153 - Bethel , et al. November 1, 2	2016-11-01
Reduction of ring clipping in two-stroke cycle engines Grant 9,068,498 - Callahan June 30, 2	2015-06-30
Opposed-piston cylinder bore constructions with solid lubrication in the top ring reversal zones Grant 8,851,029 - Callahan , et al. October 7, 2	2014-10-07
Reduction Of Ring Clipping In Two-stroke Cycle Engines App 20140216425 - Callahan; Brian J.	2014-08-07
Opposed-piston cylinder bore constructions with solid lubrication in the top ring reversal zones App 20130199503 - Callahan; Brian J. ; et al.	2013-08-08
Oil retention in the bore/piston interfaces of ported cylinders in opposed-piston engines App 20120186561 - Bethel; Steven J. ; et al.	2012-07-26
Online method and apparatus for management of collectibles App 20050187827 - Weiss, Morris D. ; et al.	2005-08-25
Online method and system for management of collectibles Grant 6,904,410 - Weiss , et al. June 7, 2	2005-06-07

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