Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Ceramics and cement Patent Leaders in 2020 2020

Primary CPC class C04 · Section C

Rankings count each patent once by its primary Cooperative Patent Classification. All-time pages aggregate the full database; year pages use patent grant year.

Recent years: 2016201720182019202020212022202320242025

Patents per Year

Patents granted per year, 1996 to 2025Bar chart with a peak of 605 patents in 1998.peak 6051996: 571 patents19961997: 550 patents1998: 605 patents1999: 564 patents19992000: 479 patents2001: 569 patents2002: 549 patents20022003: 541 patents2004: 554 patents2005: 377 patents20052006: 395 patents2007: 392 patents2008: 375 patents20082009: 370 patents2010: 508 patents2011: 522 patents20112012: 539 patents2013: 535 patents2014: 509 patents20142015: 473 patents2016: 431 patents2017: 435 patents20172018: 445 patents2019: 450 patents2020: 525 patents20202021: 463 patents2022: 466 patents2023: 549 patents20232024: 552 patents2025: 589 patents2025

Top Inventors

Rank ↑ Inventor ↕ Patents ↕ Primary Company ↕
1 Vahit Atakan 8 Solidia Technologies
2 Sadananda Sahu 7 Solidia Technologies
3 Sungbo Shim 7 Rolls-Royce High Temperature Composites
#4 Sean Quinn 6 Solidia Technologies
#5 Jennifer Y. Sun 5 Applied Materials
#6 Stephen Harris 5 Rolls-Royce High Temperature Composites
#7 Wayde R. Schmidt 5 RTX (Raytheon)
#8 Abbas Saeed Hakeem 4 KFUPM
#9 Bilal Anjum Ahmed 4 KFUPM
#10 Christian Bürge 4 Sika Technology Ag
#11 Deepak Ravikumar 4 Solidia Technologies
#12 Glen Harold Kirby 4 GE
#13 Jared Hogg Weaver 4 GE
#14 Muhammad Ali Ehsan 4 KFUPM
#15 Romeo Ilarian Ciuperca 4 —
#16 Robert J. Shinavski 4 Rolls-Royce High Temperature Composites
#17 Tahar Laoui 4 KFUPM
#18 Akinobu Oribe 3 Ngk Insulators
#19 Andrew J. Lazur 3 —
#20 Ashish Dubey 3 United States Gypsum
#21 Biraja P. Kanungo 3 Applied Materials
#22 B. Raghava Reddy 3 Saudi Arabian Oil
#23 Christoph Hesse 3 Basf Se
#24 Daisuke Ohtsu 3 Tdk
#25 Frank Ong 3 Construction Research & Technology Gmbh
#26 Gilbert Mäder 3 Sika Technology Ag
#27 Gregory Scot Corman 3 GE
#28 Hiroharu Kobayashi 3 Ngk Insulators
#29 James C. Smith 3 Construction Research & Technology Gmbh
#30 Joachim DENGLER 3 Basf Se
#31 John M. Guynn 3 Roman Cement
#32 Jörg Zimmermann 3 Sika Technology Ag
#33 Jürg WEIDMANN 3 Sika Technology Ag
#34 Liu Hailong 3 Tdk
#35 Liang Liping 3 Tdk
#36 Paul Sheedy 3 RTX (Raytheon)
#37 Rick PAPONETTI 3 Construction Research & Technology Gmbh
#38 Samuel J. Lewis 3 Halliburton Energy Services
#39 Takahiro Tomita 3 Ngk Insulators
#40 Torben GAEDT 3 Basf Se
#41 Ying She 3 RTX (Raytheon)
#42 Abdullah Al-Awadh 2 Saudi Arabian Oil
#43 Abdulaziz Alhelal 2 Saudi Arabian Oil
#44 Abdullah Al-Yami 2 Saudi Arabian Oil
#45 Aijuan Gu 2 Soochow University
#46 Aimin Yang 2 North China University Of Science And Technology
#47 Ali Alsafran 2 Saudi Arabian Oil
#48 Alexandre GUERINI 2 Cemex Research Group Ag
#49 Alex Xie 2 —
#50 Anthony A. DiGiovanni 2 Baker Hughes Holdings
#51 Antonio Santagati 2 Saudi Arabian Oil
#52 Armin Pfeil 2 Hilti Aktiengesellschaft
#53 Beat Marazzani 2 Sika Technology Ag
#54 Brant U. Kolb 2 3M
#55 Byong-Wa Chun 2 W.R. Grace & Co.-Conn.
#56 Caroline Demathieu-Roeltgen 2 Saint-Gobain Placo
#57 Calder Hendrickson 2 Aquasmart Enterprises
#58 Carola Kaddatz 2 Sika Technology Ag
#59 Caidian Luo 2 James Hardie Technology Limited
#60 Christian BLACHIER 2 Holcim Technology
#61 Christine Chaumilliat 2 Holcim Technology
#62 Christophe Kurz 2 Sika Technology Ag
#63 Charles D. Welker 2 Unknown
#64 Daniel Castoro 2 Solidia Technologies
#65 Daniel Gene Dunn 2 GE
#66 David A. Litton 2 RTX (Raytheon)
#67 Devin Patten 2 Solidia Technologies
#68 Douglas M. Dukes 2 Melior Innovations
#69 Dongming Zhu 2 Huawei
#70 Franz Wombacher 2 Sika Technology Ag
#71 George Clarence Geal, III 2 J&P Invesco
#72 Guozheng Liang 2 Soochow University
#73 Hafiz Muzammil IRSHAD 2 KFUPM
#74 Hiroyuki Ibe 2 Fujimi Incorporated
#75 Hideo Tawara 2 Mitsubishi Materials
#76 Hussain AlBahrani 2 Saudi Arabian Oil
#77 Janet B. Hurst 2 —
#78 Jan Rideout 2 Saint-Gobain Placo
#79 Jeremy R. Hart 2 RTX (Raytheon)
#80 Jérôme Roger 2 CNRS
#81 Jeffrey Alexander Whidden 2 Cr Minerals Company
#82 Jochen GRÖTZINGER 2 Sika Technology Ag
#83 Jobin Jose 2 KFUPM
#84 John P. Kuppler 2 Solidia Technologies
#85 Joseph Earl Thomas 2 Cr Minerals Company
#86 Jun Moteki 2 Ngk Spark Plug Co.
#87 Jun Shi 2 —
#88 Katarzyna Chuda 2 Saint-Gobain Adfors
#89 Kaushal Gangakhedkar 2 Applied Materials
#90 Kang N. Lee 2 —
#91 Kathryn S. Read 2 RTX (Raytheon)
#92 Kei Sato 2 Yazaki
#93 Kenji Tokunaga 2 Hitachi
#94 Kiyoshi Kamitani 2 Fujitsu Limited
#95 Krishan Lal Luthra 2 GE
#96 Krishna Uibel 2 3M
#97 Kumiko Yamazaki 2 Tdk
#98 Kyriacos Agapiou 2 Halliburton Energy Services
#99 Laura Brooks 2 Saint-Gobain Placo
#100 Li Yuan 2 Soochow University

Top Companies

Rank ↑ Company ↕ Patents ↕
1 RTX (Raytheon) 18
2 GE 15
3 Rolls-Royce High Temperature Composites 14
#4 Ngk Insulators 11
#5 Sika Technology Ag 10
#6 Solidia Technologies 10
#7 United States Gypsum 10
#8 KFUPM 9
#9 Basf Se 8
#10 Rolls-Royce Plc 8
#11 Corning Incorporated 7
#12 Halliburton Energy Services 7
#13 Holcim Technology 7
#14 Tdk 7
#15 3M 6
#16 Applied Materials 6
#17 CNRS 6
#18 Construction Research & Technology Gmbh 5
#19 Hilti Aktiengesellschaft 5
#20 Mitsubishi Materials 5
#21 Saint-Gobain Placo 5
#22 Saudi Arabian Oil 5
#23 Kerneos 4
#24 Knauf Gips Kg 4
#25 Murata Manufacturing Co. 4
#26 Safran Ceramics 4
#27 Saint-Gobain Centre De Recherches Et D'Etudes Europeen 4
#28 Saint-Gobain Ceramics & Plastics 4
#29 NASA 4
#30 Baker Hughes Holdings 3
#31 Goodrich 3
#32 Hitachi 3
#33 Ngk Spark Plug Co. 3
#34 Refractory Intellectual Property 3
#35 Roman Cement 3
#36 S.A. Lhoist Recherche Et Développement 3
#37 Sumitomo Electric Industries 3
#38 Tosoh 3
#39 Unknown 3
#40 Samsung 3
#41 Aquasmart Enterprises 2
#42 Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College 2
#43 Byd Company Limited 2
#44 Calix 2
#45 Carboncure Technologies 2
#46 Cemex Research Group Ag 2
#47 Cr Minerals Company 2
#48 Etex Services Nv 2
#49 Fujimi Incorporated 2
#50 Hrl Laboratories 2
#51 James Hardie Technology Limited 2
#52 J&P Invesco 2
#53 Kao 2
#54 Kyocera 2
#55 MIT 2
#56 Melior Innovations 2
#57 National Taipei University Of Technology 2
#58 Rutgers, The State University Of New Jersey 2
#59 Sebastos Technologies 2
#60 Shandong Sinocera Functional Material Co. 2
#61 Shin-Etsu Chemical Co. 2
#62 Skyworks Solutions 2
#63 Soochow University 2
#64 Straumann Holding Ag 2
#65 The University Of Tokyo 2
#66 Wacker Chemie Ag 2
#67 Honeywell 2
#68 Apple 1
#69 Aac Technologies Pte. 1
#70 Advanced Ceramic Fibers 1
#71 Airbus Operations Limited 1
#72 A.L.M. Holding 1
#73 Ambri 1
#74 Andritz 1
#75 Ansaldo Energia Ip Uk Limited 1
#76 Applied Cavitation 1
#77 Aspen Aerogels 1
#78 Asphalt Sciences 1
#79 Axalta Coating Systems Ip Co. 1
#80 Battelle Memorial Institute 1
#81 Beijing University Of Technology 1
#82 Binder Gmbh 1
#83 Biomason 1
#84 Blanco Gmbh + Co Kg 1
#85 Boral Ip Holdings (Australia) Pty Limited 1
#86 Carbicrete 1
#87 Certainteed 1
#88 Certainteed Gypsum 1
#89 Chongqing Ruzer Pharmaceutical Co. 1
#90 Chryso 1
#91 Comadur Sa 1
#92 Commonwealth Scientific And Industrial Research Organisation 1
#93 Crayola 1
#94 Denso 1
#95 Dentsply Sirona 1
#96 Department Of Electronics And Information Technology (Deity) 1
#97 Diamond Innovations 1
#98 Dinex A/S 1
#99 Domtar Paper Company 1
#100 Doosan Fuel Cell America 1