Ritchie Engineering Company, Inc.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Ritchie Engineering Company, Inc..The latest application filed is for "refrigerant management system with operational efficiency improvement devices".

Company Profile

0.7.9

Ritchie Engineering Company, Inc. - Bloomington MN

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

Patent Activity

Patent	Date
Refrigerant maintenance system Grant D804,975 - Truitt December 12, 2	2017-12-12
Refrigerant Management System With Operational Efficiency Improvement Devices App 20170191719 - PLASEK; RONALD A. ; et al.	2017-07-06
Refrigeration Efficiency Monitoring System App 20170100985 - JOHNSON; KARL ; et al.	2017-04-13
Vacuum sensor Grant 7,428,822 - Ramachandran , et al. September 30, 2	2008-09-30
Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus Grant 7,310,965 - Ramachandran , et al. December 25, 2	2007-12-25
Valve manifold assembly App 20070113575 - Borre; Robert ; et al.	2007-05-24
Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus and vacuum sensor App 20070017244 - Ramachandran; Ajit ; et al.	2007-01-25
Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus Grant 7,159,412 - Ramachandran , et al. January 9, 2	2007-01-09
Vacuum pump App 20060228242 - West; William G. ; et al.	2006-10-12
Vacuum pump App 20060228246 - West; William G. ; et al.	2006-10-12
Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus and vacuum sensor Grant 7,073,346 - Ramachandran , et al. July 11, 2	2006-07-11
Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus App 20050092010 - Ramachandran, Ajit ; et al.	2005-05-05
Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus Grant 6,832,491 - Ramachandran , et al. December 21, 2	2004-12-21
Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus App 20040020233 - Ramachandran, Ajit ; et al.	2004-02-05
Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus and vacuum sensor App 20030188545 - Ramachandran, Ajit ; et al.	2003-10-09

Company Registrations

NCAGE Code	11284	RITCHIE ENGINEERING CO INC
NCAGE Code	EX183	RITCHIE ENGINEERING CO INC
CAGE Code	11284	RITCHIE ENGINEERING CO INC
CAGE Code	EX183	RITCHIE ENGINEERING CO INC

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