Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Timothy D. Shaffer — 60 Patents

ExxonMobil: 56 patents #109 of 10,161Top 2%
GE: 4 patents #8,262 of 36,430Top 25%
Plainfield, NJ: #2 of 175 inventorsTop 2%
New Jersey: #636 of 69,400 inventorsTop 1%
Overall (All Time): #38,820 of 4,157,543Top 1%
60 Patents All Time
Timothy D. Shaffer has been granted 60 US patents while listed as an inventor at ExxonMobil. The first was granted in 1991 and the most recent in September 2025. Timothy D. Shaffer ranks #38,820 of 4,157,543 US inventors in our database (top 0.93%). Patent records list Timothy D. Shaffer in Plainfield, NJ, US.

Issued Patents All Time

Showing 1–25 of 60 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12404408 Processes for functionalization and polymerization of polyaromatic feedstock Yunlong Zhang, Jordan N. Metz, Huaxing Zhou, August W. Bosse, Suzzy C. H. Ho +1 more 2025-09-02
11952480 Enhanced processability of LLDPE by addition of ultra-high molecular weight density polyethylene Johannes M. Soulages, Arnold Lustiger, Thomas T. Sun, Pamela J. Wright, Madhavi Vadlamudi +3 more 2024-04-09 $523,785,000
11919876 Process and system to make olefin epoxides Kun Wang 2024-03-05 $815,465,000
11827613 Process and system to make olefin epoxides Kun Wang 2023-11-28 $291,283,000
11059941 Methods for preparing materials from polyaromatic heavy feedstocks Huaxing Zhou, Arnold Lustiger, Victor DeFlorio, Srinivasan Rajagopalan, Donald N. Schulz 2021-07-13 $185,175,000
10947375 System and process for the production of functionalized olefinic-based polymer Yu Wang, Richard D. Hembree, Michael F. McDonald, Joseph A. Maier, Richard Cheng-Ming Yeh +2 more 2021-03-16 $441,193,000
10781295 Mooney viscosity stable brominated elastomers Sunny Jacob, Michael F. McDonald, Adam H. Scott, Joel E. Schmieg, John A. Clark 2020-09-22 $149,375,000
10138197 Direct catalytic partial oxidation of allyl ether Partha Nandi, Steven L. Suib 2018-11-27 $87,965,000
9079990 Methods of production of alkylstyrene/isoolefin polymers Deborah J. Davis, James P. Stokes 2015-07-14 $171,840,000
8765824 Ethanol stable polyether epoxy based membrane for ethanol and aromatics separation Man Kit Ng, David T. Ferrughelli, George Skic, Randall D. Partridge 2014-07-01 $125,568,000
8513367 Mitigation of elastomer reactor fouling using mechanical vibration Pamela J. Wright, George P. Akehurst, Limin Song 2013-08-20 $103,563,000
8178465 Polydispersity-controlled isoolefin polymerization with polymorphogenates Michael F. McDonald, David Yen-Lung Chung, Robert N. Webb, Deborah J. Davis, Pamela J. Wright 2012-05-15 $121,941,000
8148450 Process to produce a hydrocarbon rubber cement utilizing a hydrofluorocarbon diluent Michael F. McDonald, Scott T. Milner, Robert N. Webb, Richard D. Hembree 2012-04-03 $124,635,000
8119006 Ethanol stable epoxy amine based membrane for aromatics separation Abhimanyu O. Patil, David T. Ferrughelli, Beth A. Winsett, Benjamin A. McCool, Randall D. Partridge 2012-02-21 $119,898,000
8076524 Process for generating alpha olefin comonomers James R. Lattner, John F. Walzer, Jr., Krishnan Sankaranarayanan, John S. Buchanan, Milind Ajinkya +3 more 2011-12-13 $108,273,000
7982085 In-line process for generating comonomer John S. Buchanan, James R. Lattner, John F. Walzer, Jr. 2011-07-19 $141,780,000
7981991 Separation of polymer slurries Michael F. McDonald, Scott T. Milner, Robert N. Webb 2011-07-19 $141,780,000
7893176 Polydispersity-controlled isoolefin polymerization with polymorphogenates Michael F. McDonald, David Yen-Lung Chung, Robert N. Webb, Deborah J. Davis, Pamela J. Wright 2011-02-22 $180,012,000
7781547 Reactor systems for use in polymerization processes Yuan-Ju Chen, Michael F. McDonald, David Yen-Lung Chung, Robert N. Webb 2010-08-24 $95,941,000
7723447 Polymerization processes Scott T. Milner, Michael G. Matturro, Robert N. Webb, David Yen-Lung Chung, Michael F. McDonald 2010-05-25 $144,058,000
7687672 In-line process for generating comonomer John S. Buchanan 2010-03-30 $132,368,000
7582715 Polymers substantially free of long chain branching Scott T. Milner, David Yen-Lung Chung 2009-09-01 $388,094,000
7557170 Method for reducing depositions in polymerization vessels Pamela J. Wright, J. Davis Deborah, Michael F. McDonald 2009-07-07 $786,528,000
7491773 Halogenated polymers with new sequence distributions David Yen-Lung Chung 2009-02-17 $575,401,000
7425601 Polymers with new sequence distributions David Yen-Lung Chung 2008-09-16 $339,001,000