Alan Cheng has been granted 56 US patents while listed as an inventor at Praxair Technology . The first was granted in 1989 and the most recent in April 2025. Alan Cheng ranks #44,020 of 4,157,543 US inventors in our database (top 1.1%). Patent records list Alan Cheng in Redwood City, CA, US.
Patents per Year Patents granted per year, 1989 to 2025 Bar chart with a peak of 6 patents in 2001. peak 6 1989: 1 patents 1989 1990: 1 patents 1991: 1 patents 1992: 1 patents 1992 1993: 2 patents 1994: 4 patents 1995: 3 patents 1995 1996: 1 patents 1997: 2 patents 1998: 3 patents 1998 1999: 4 patents 2000: 1 patents 2001: 6 patents 2001 2002: 2 patents 2003: 2 patents 2006: 2 patents 2006 2007: 3 patents 2008: 1 patents 2011: 1 patents 2011 2014: 3 patents 2015: 3 patents 2020: 2 patents 2020 2022: 2 patents 2023: 2 patents 2024: 1 patents 2024 2025: 2 patents 2025
Issued Patents All Time
Profile Widget
Showing 1–25 of 56 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
12280255 Surgical tools and methods for delivering a neurostimulator into the pterygopalatine fossa Tom Luhrs , Ryan Powell , Jennifer Teng 2025-04-22
12220586 Cardiac event sensing in an implantable medical device Jian Cao 2025-02-11
12137924 Surgical system and methods Jian Cao , Zhongping Yang 2024-11-12
$35,278,000
11678897 Surgical system and methods Jian Cao , Zhongping Yang 2023-06-20
$85,833,000
11559690 Ventricular assist system and method Jian Cao , Hai Huang 2023-01-24
$40,340,000
11478641 Surgical tools and methods for delivering a neurostimulator into the pterygopalatine fossa Tom Luhrs , Ryan Powell , Jennifer Teng 2022-10-25
11357988 Cardiac event sensing in an implantable medical device Jian Cao 2022-06-14
$50,819,000
10744468 System and method for feeding gas into liquid Yeu-Chuan Simon Ho , Balazs Hunek 2020-08-18
10576288 Cardiac event sensing in an implantable medical device Jian Cao 2020-03-03
$47,644,000
9101780 Automatic external defibrillator for implatable cardiac defibrillator patients undergoing procedures involving electromagnetic interference Henry R. Halperin 2015-08-11
8973283 System and method for solvent recovery in a batch fluidized bed process Arup Nandi , John Fredric Billingham 2015-03-10
$87,784,000
8938979 Method for lyophilization using cryogenic refrigeration system — 2015-01-27
$88,385,000
8820097 Method and system for regulating the mixture of cryogen liquid and warm gas for a controlled rate cryogenic chiller or freezing system Yeu-Chuan Simon Ho , Ying Zhou 2014-09-02
$45,581,000
8794013 Method and system for nucleation control in a controlled rate freezer (CRF) Ying Zhou , Theodore Hall Gasteyer, III , Nigel Grinter , Yeu-Chuan Simon Ho , Robert Sever 2014-08-05
$17,058,000
8794012 Method and system for controlled rate freezing of biological material — 2014-08-05
$17,058,000
8015841 Cryogenic refrigeration system for lyophilization — 2011-09-13
$17,492,000
7461649 Portable gas operating inhaler Stephan Gamard , Bryan R. Bielec , Royce S. Fishman 2008-12-09
$66,233,000
D556753 Network appliance Chaucer Chiu 2007-12-04
7279319 Method and apparatus for injecting oxygen into fermentation processes — 2007-10-09
$47,327,000
D539243 Television Chaucer Chiu , Lulu Ma 2007-03-27
D533147 Receiving and sending box of TV wireless Chaucer Chiu , Caroline Zhang 2006-12-05
7048262 Method and apparatus for injecting oxygen into fermentation processes — 2006-05-23
$62,396,000
6622496 External loop nonfreezing heat exchanger Donald Leonard DeVack 2003-09-23
$15,057,000
6505472 Cryogenic condensation system Simon Ho 2003-01-14
$29,511,000
6500765 Method for manufacturing dual-spacer structure Chia-Hung Kao 2002-12-31
$1,042,000
