Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Nai Y. Chen — 75 Patents

ExxonMobil: 74 patents #60 of 10,161Top 1%
Titusville, NJ: #1 of 96 inventorsTop 2%
New Jersey: #395 of 69,400 inventorsTop 1%
Overall (All Time): #25,505 of 4,157,543Top 1%
75 Patents All Time
Nai Y. Chen has been granted 75 US patents while listed as an inventor at ExxonMobil. The first was granted in 1980 and the most recent in July 2002. Nai Y. Chen ranks #25,505 of 4,157,543 US inventors in our database (top 0.61%). Patent records list Nai Y. Chen in Titusville, NJ, US.

Patents per Year

Patents granted per year, 1980 to 2002Bar chart with a peak of 11 patents in 1989.peak 111980: 7 patents19801981: 8 patents1982: 3 patents19821983: 4 patents1984: 4 patents19841985: 7 patents1986: 4 patents19861987: 5 patents1988: 7 patents19881989: 11 patents1990: 7 patents19901991: 3 patents1992: 2 patents19921993: 1 patents1995: 1 patents19952002: 1 patents2002

Issued Patents All Time

Showing 1–25 of 75 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6416654 Method for controlling hydrocracking and isomerization dewaxing operations Tai-Sheng Chou, Grant G. Karsner, Clinton R. Kennedy, Rene B. LaPierre, Melcon G. Melconian +2 more 2002-07-09
5419830 Method for controlling hydrocracking and isomerization dewaxing Tai-Sheng Chou, Grant G. Karsner, Clinton R. Kennedy, Rene B. LaPierre, Melcon G. Melconian +2 more 1995-05-30 $19,842,000
5271920 Activation of zeolites Clarence D. Chang, Cynthis T. Chu, Bruce P. Pelrine 1993-12-21 $23,026,000
5110445 Lubricant production process Randall D. Partridge 1992-05-05 $11,998,000
5100535 Method for controlling hydrocracking operations Tai-Sheng Chou, Grant G. Karsner, Clinton R. Kennedy, Rene B. LaPierre, Melcon G. Melconian +2 more 1992-03-31 $18,809,000
5037529 Integrated low pressure aromatization process Ralph M. Dessau, Randall D. Partridge, Sharon B. McCullen 1991-08-06 $13,423,000
5013423 Reforming and dehydrocyclization Ralph M. Dessau, Randall D. Partride, Ernest W. Valyocsik 1991-05-07 $45,833,000
4983274 Shape selective crystalline silicate zeolite containing intermetallic component and use as catalyst in hydrocarbon conversions Thomas F. Degnan, Paul B. Weisz 1991-01-08 $6,351,000
4971766 Apparatus for FCC process with catalyst separation Billy K. Huh, Thomas Degnan 1990-11-20 $15,698,000
4962074 Catalytic cracking of hydrocarbons with oxygen promoted alkali metal zeolite cracking catalyst Thomas F. Degnan 1990-10-09 $5,833,000
4944862 Integrated catalytic dewaxing and catalytic cracking process Anil B. Ketkar, Randall D. Partridge 1990-07-31 $29,157,000
4933283 Process for converting cellulosic materials to hydrocarbon products Leonard R. Koenig 1990-06-12 $12,851,000
4919788 Lubricant production process William E. Garwood, Tracy J. Huang, Quang N. Le, Stephen S. Wong 1990-04-24 $9,811,000
4911823 Catalytic cracking of paraffinic feedstocks with zeolite beta Thomas F. Degnan, Clinton R. Kennedy, Anil B. Ketkar, Leonard R. Koenig, Robert A. Ware 1990-03-27 $9,353,000
4895636 FCC process with catalyst separation Billy K. Huh, Thomas F. Degnan 1990-01-23 $15,377,000
4882039 Catalytic cracking of hydrocarbons with oxygen promoted alkali metal zeolite cracking catalyst Thomas F. Degnan 1989-11-21 $28,658,000
4877581 Catalyst for dewaxing hydrocarbon feedstock Dennis E. Walsh 1989-10-31 $20,434,000
4871444 Distillate fuel quality of FCC cycle oils Billy K. Huh, Anil B. Ketkar, Chaya R. Venkat 1989-10-03 $13,544,000
4862836 Operation of an internal combustion engine with a pre-engine converter Thomas F. Degnan, Sr. 1989-09-05 $11,389,000
4861932 Aromatization process Thomas F. Degnan, Sharon B. McCullen 1989-08-29 $13,068,000
4851109 Integrated hydroprocessing scheme for production of premium quality distillates and lubricants Rene B. LaPierre, Randall D. Partridge, Stephen S. Wong 1989-07-25 $4,502,000
4840929 Zeolite beta with improved regeneration characteristics Sharon B. McCullen 1989-06-20 $11,900,000
4828812 Titanosilicates of enhanced ion exchange capacity and their preparation Sharon B. McCullen, Scott Han 1989-05-09 $4,468,000
4827068 Aromatization with catalyst comprising noble-metal containing titanosilicate having the structure of zeolite beta Sharon B. McCullen 1989-05-02 $5,437,000
4808296 Process for dewaxing hydrocarbon feedstock Dennis E. Walsh 1989-02-28 $8,125,000