Challman; Robert G.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Challman; Robert G..The latest application filed is for "micro motion poppet valve assembly for delivery of ink with large pigment particles to a writing nib and writing instrument comprising same".

Company Profile

1.8.6

Challman; Robert G. - Naperville IL

*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
Micro motion poppet valve assembly for delivery of ink with large pigment particles to a writing nib and writing instrument comprising same Grant 9,050,850 - Gillum , et al. June 9, 2	2015-06-09
Retractable instrument having a two stage protraction/retraction sequence Grant 8,568,047 - Challman , et al. October 29, 2	2013-10-29
Micro Motion Poppet Valve Assembly For Delivery Of Ink With Large Pigment Particles To A Writing Nib And Writing Instrument Comprising Same App 20130170887 - Gillum; Christoph ; et al.	2013-07-04
Retractable instrument having a two stage protraction/retraction sequence Grant 8,393,814 - Challman , et al. March 12, 2	2013-03-12
Retractable Instrument Having A Two Stage Protraction/retraction Sequence App 20120328352 - Challman; Robert G. ; et al.	2012-12-27
Seal assembly for retractable instrument Grant 7,775,734 - Dylkiewicz , et al. August 17, 2	2010-08-17
Retractable Instrument Having A Two Stage Protraction/retraction Sequence App 20100196080 - CHALLMAN; ROBERT G. ; et al.	2010-08-05
Seal Assembly For Retractable Instrument App 20090142124 - Dylkiewicz; David A. ; et al.	2009-06-04
Seal assembly for retractable instrument Grant 7,488,130 - Dylkiewicz , et al. February 10, 2	2009-02-10
Seal assembly for retractable instrument App 20080187389 - Dylkiewicz; David A. ; et al.	2008-08-07

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