Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David Espinosa — 17 Patents

Chevron: 15 patents #294 of 4,788Top 7%
NDNtt Docomo: 2 patents #761 of 1,706Top 45%
KOKemira Oyj: 1 patents #176 of 376Top 50%
Houston, TX: #1,228 of 21,073 inventorsTop 6%
Texas: #8,472 of 125,132 inventorsTop 7%
Overall (All Time): #263,971 of 4,157,543Top 7%
17 Patents All Time
David Espinosa has been granted 17 US patents while listed as an inventor at Chevron. The first was granted in 2009 and the most recent in August 2025. David Espinosa ranks #263,971 of 4,157,543 US inventors in our database (top 6.3%). Patent records list David Espinosa in Houston, TX, US.

Patents per Year

Patents granted per year, 2009 to 2025Bar chart with a peak of 4 patents in 2020.peak 42009: 1 patents20092010: 1 patents20102019: 3 patents20192020: 4 patents20202021: 1 patents20212022: 2 patents20222023: 1 patents20232025: 4 patents2025

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12378464 Methods for hydrocarbon recovery Do Hoon Kim, Dennis Arun Alexis, Varadarajan Dwarakanath, Taimur Malik, Logan Jackson +5 more 2025-08-05
12371606 Methods for hydrocarbon recovery Do Hoon Kim, Dennis Arun Alexis, Varadarajan Dwarakanath, Taimur Malik, Logan Jackson +5 more 2025-07-29
12275893 Methods for hydrocarbon recovery Do Hoon Kim, Dennis Arun Alexis, Varadarajan Dwarakanath, Taimur Malik, Logan Jackson +5 more 2025-04-15
12247162 Methods for hydrocarbon recovery Do Hoon Kim, Dennis Arun Alexis, Varadarajan Dwarakanath, Taimur Malik, Logan Jackson +5 more 2025-03-11
11585741 Portable apparatus and methods for analyzing injection fluids Harold C. Linnemeyer, Kerry K. Spilker 2023-02-21 $1,215,291,000
11299409 Polymer compositions and methods of use Logan Jackson, Thomas J. Lynch, Ronald Robinson, Frances Fournier, Hong Yang +5 more 2022-04-12
11261300 Methods and systems for generating aqueous polymer solutions Do Hoon Kim, Dennis Arun Alexis, Varadarajan Dwarakanath, Taimur Malik, Peter G. New +2 more 2022-03-01 $478,509,000
11084973 Methods for hydrocarbon recovery Do Hoon Kim, Dennis Arun Alexis, Varadarajan Dwarakanath, Taimur Malik, Logan Jackson +5 more 2021-08-10 $342,084,000
10865279 Methods and systems for generating aqueous polymer solutions Do Hoon Kim, Dennis Arun Alexis, Varadarajan Dwarakanath, Taimur Malik, Peter G. New +2 more 2020-12-15 $398,267,000
10822539 Methods for hydrocarbon recovery Do Hoon Kim, Dennis Arun Alexis, Varadarajan Dwarakanath, Taimur Malik, Logan Jackson +5 more 2020-11-03 $375,839,000
10626320 Methods for hydrocarbon recovery Do Hoon Kim, Dennis Arun Alexis, Varadarajan Dwarakanath, Taimur Malik, Logan Jackson +5 more 2020-04-21 $668,860,000
10619087 Methods for hydrocarbon recovery Do Hoon Kim, Dennis Arun Alexis, Varadarajan Dwarakanath, Taimur Malik, Logan Jackson +5 more 2020-04-14 $367,455,000
10436693 Portable apparatus and methods for analyzing injection fluids Varadarajan Dwarakanath, Dustin L. Walker, Dennis Arun Alexis, Harold C. Linnemeyer, Marlon Solano 2019-10-08 $446,679,000
10344129 Methods and systems for generating aqueous polymer solutions Do Hoon Kim, Dennis Arun Alexis, Varadarajan Dwarakanath, Taimur Malik, Peter G. New +2 more 2019-07-09 $333,068,000
10168265 Portable apparatus and methods for analyzing injection fluids Varadarajan Dwarakanath, Dustin L. Walker, Dennis Arun Alexis, Harold C. Linnemeyer, Marlon Solano 2019-01-01
7730455 Method and apparatus for enforcing safety properties of computer programs by generating and solving constraints Ajay Chander, Nayeem Islam, Peter Lee, George C. Necula 2010-06-01 $229,000
7574695 Performing checks on the resource usage of computer programs Ajay Chander, Nayeem Islam, George C. Necula, Peter Lee 2009-08-11 $526,000