Chang; Seung Yong

Patent Applications and Registrations

Patent applications and USPTO patent grants for Chang; Seung Yong.The latest application filed is for "air conditioner and method for changing refrigerant of air-conditioner".

Company Profile

0.11.10

Chang; Seung Yong - Seoul KR
Chang; Seung Yong - Yangcheon-gu KR

*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
Method for determining if refrigerant charge is sufficient and charging refrigerant Grant 9,027,357 - Chang , et al. May 12, 2	2015-05-12
Air conditioning apparatus and method for determining the amount of refrigerant of air-conditioning apparatus Grant 8,220,280 - Chang , et al. July 17, 2	2012-07-17
Multi-type air conditioner with defrosting device Grant 7,716,941 - Park , et al. May 18, 2	2010-05-18
Air conditioner and method for changing refrigerant of air-conditioner App 20090235675 - Chang; Seung Yong ; et al.	2009-09-24
Air conditioning apparatus and method for determining the amount of refrigerant of air-conditioning apparatus App 20090211281 - Chang; Seung Yong ; et al.	2009-08-27
Oil separator and cooling-cycle apparatus using the same Grant 7,386,994 - Chang , et al. June 17, 2	2008-06-17
Multi-type air conditioner with defrosting device Grant 7,308,800 - Park , et al. December 18, 2	2007-12-18
Multi-type Air Conditioner With Defrosting Device App 20070130967 - PARK; Jong Han ; et al.	2007-06-14
Multi-type air conditioner and method for controlling operation of the same Grant 7,185,502 - Park , et al. March 6, 2	2007-03-06
Method for controlling multi-type air conditioner Grant 7,131,283 - Oh , et al. November 7, 2	2006-11-07
Multi-type air conditioner with plurality of distributor able to be shutoff Grant 7,124,595 - Park , et al. October 24, 2	2006-10-24
Oil separator and cooling-cycle apparatus using the same App 20060112724 - Chang; Seung Yong ; et al.	2006-06-01
Method for operating multi-type air conditioner Grant 6,922,613 - Park , et al. July 26, 2	2005-07-26
Method for controlling multi-type air conditioner App 20050155368 - Oh, Il Kwon ; et al.	2005-07-21
Multi-type air conditioner Grant 6,918,264 - Park , et al. July 19, 2	2005-07-19
Multi-type air conditioner and method for controlling operation of the same App 20040194491 - Park, Jong Han ; et al.	2004-10-07
Multi-type air conditioner with plurality of distributor able to be shutoff App 20040139755 - Han Park, Jong ; et al.	2004-07-22
Multi-type air conditioner App 20040134215 - Park, Jong Han ; et al.	2004-07-15
Method for operating multi-type air conditioner App 20040138784 - Park, Jong Han ; et al.	2004-07-15
Multi-type air conditioner with defrosting device App 20040134205 - Park, Jong Han ; et al.	2004-07-15

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