Gen Takeya

432 total citations
44 papers, 345 citations indexed

About

Gen Takeya is a scholar working on Fuel Technology, Biomedical Engineering and Mechanical Engineering. According to data from OpenAlex, Gen Takeya has authored 44 papers receiving a total of 345 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Fuel Technology, 16 papers in Biomedical Engineering and 13 papers in Mechanical Engineering. Recurrent topics in Gen Takeya's work include Coal and Coke Industries Research (18 papers), Thermochemical Biomass Conversion Processes (11 papers) and NMR spectroscopy and applications (10 papers). Gen Takeya is often cited by papers focused on Coal and Coke Industries Research (18 papers), Thermochemical Biomass Conversion Processes (11 papers) and NMR spectroscopy and applications (10 papers). Gen Takeya collaborates with scholars based in Japan and Taiwan. Gen Takeya's co-authors include Tadao Ishii, Ryoichi Yoshida, Shigeru Ueda, Takuji Hosoi, Hideshi Hattori, H. Itoh, K. TANABE, Yosuke Maekawa, Katsuyoshi Shimokawa and Mitsuomi Itoh and has published in prestigious journals such as Fuel, Pure and Applied Chemistry and Fuel Processing Technology.

In The Last Decade

Gen Takeya

36 papers receiving 288 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Gen Takeya Japan 8 122 118 108 103 94 44 345
S. Parkash Canada 12 77 0.6× 116 1.0× 63 0.6× 74 0.7× 132 1.4× 40 406
Masataka Makabe Japan 12 26 0.2× 105 0.9× 102 0.9× 214 2.1× 65 0.7× 30 382
Klaus H. Altgelt United States 12 45 0.4× 310 2.6× 25 0.2× 84 0.8× 204 2.2× 13 510
Junwen Gao China 11 128 1.0× 81 0.7× 141 1.3× 195 1.9× 33 0.4× 13 388
Fred W. Steffgen United States 6 318 2.6× 33 0.3× 160 1.5× 119 1.2× 22 0.2× 9 528
Rafael Cabanzo Colombia 8 90 0.7× 90 0.8× 32 0.3× 116 1.1× 86 0.9× 36 358
B. Ignasiak Canada 12 32 0.3× 39 0.3× 87 0.8× 141 1.4× 49 0.5× 23 378
Zhi-Hao Ma China 12 59 0.5× 72 0.6× 206 1.9× 177 1.7× 18 0.2× 30 361
Andrzej Krztoń Poland 15 555 4.5× 34 0.3× 270 2.5× 158 1.5× 54 0.6× 24 772
Menglong Niu China 12 52 0.4× 100 0.8× 253 2.3× 210 2.0× 34 0.4× 22 329

Countries citing papers authored by Gen Takeya

Since Specialization
Citations

This map shows the geographic impact of Gen Takeya's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Gen Takeya with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Gen Takeya more than expected).

Fields of papers citing papers by Gen Takeya

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Gen Takeya. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Gen Takeya. The network helps show where Gen Takeya may publish in the future.

Co-authorship network of co-authors of Gen Takeya

This figure shows the co-authorship network connecting the top 25 collaborators of Gen Takeya. A scholar is included among the top collaborators of Gen Takeya based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Gen Takeya. Gen Takeya is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Ishii, Tadao, et al.. (1977). The Hydrogenolysis Reaction Mechanism of Sohya Coal. Journal of the Fuel Society of Japan. 56(5). 329–336. 1 indexed citations
2.
Yoshida, Ryoichi, et al.. (1976). High Pressure Hydrogenolysis of Hokkaido Coal Asphaltene. Journal of the Fuel Society of Japan. 55(5). 322–330. 2 indexed citations
3.
Takeya, Gen, et al.. (1975). A Study on the Different Types of Hydrogen in Coal and Its Derivatives by IR and High Resolution NMR, Spectroscopy (II). Journal of the Fuel Society of Japan. 54(5). 340–348. 1 indexed citations
4.
Hosoi, Takuji, et al.. (1975). . NIPPON KAGAKU KAISHI. 127–134. 8 indexed citations
5.
Ueda, Shigeru, et al.. (1974). Studies on the Liquefaction of Coal with Carbon Monoxide and Water. Journal of the Fuel Society of Japan. 53(12). 977–986. 4 indexed citations
6.
Yoshida, Ryoichi, Yosuke Maekawa, & Gen Takeya. (1974). Chemical Structurc of Asphaltene from Hydrogenated Hokkaide Coals. Journal of the Fuel Society of Japan. 53(12). 1011–1020. 1 indexed citations
7.
Itoh, Hironori, et al.. (1974). GPC Separation and Molecular Wcight Distribution of Benzene Soluble Components from Coal Derivatives. Journal of the Fuel Society of Japan. 53(12). 1033–1043. 2 indexed citations
8.
Itoh, Hironori, Kazuo Nomura, & Gen Takeya. (1974). Chemical Structure of Coal and Petroleum Pitches. Journal of the Fuel Society of Japan. 53(12). 1021–1031. 1 indexed citations
9.
10.
Takeya, Gen, et al.. (1973). Chemical Structure of Fractions Obtained by Gel Permeation Chromatography for γ2-4 Part of Pyridine Extract from Coal. Journal of the Fuel Society of Japan. 52(12). 906–916. 2 indexed citations
11.
Yoshida, Ryoichi, Tadao Ishii, & Gen Takeya. (1972). A Study of Coals Mildly Treated with Hydrogen without Catalyst Using High Resolution Nuclear Magnetic Resonance Spectroscopy. NIPPON KAGAKU KAISHI. 1892–1899. 5 indexed citations
12.
Ishii, Tadao, et al.. (1972). Mechanism of High Pressure Coal Hydrogenolysis of Taiheiyo Coal. Journal of the Fuel Society of Japan. 51(12). 1233–1241. 3 indexed citations
13.
Itoh, Hironori, et al.. (1971). Studies on High Pressure Hydrogenolysis of Coal by Differential Theramal Analysis. Journal of the Fuel Society of Japan. 50(12). 919–929. 2 indexed citations
14.
Yamamoto, Yoshihiko, et al.. (1970). A Study on the Chemical Structure of Pyridine Extract of Coal by High Resolution Nuclear Magnetic Resonance Spectroscopy (II). Journal of the Fuel Society of Japan. 49(12). 932–941. 1 indexed citations
15.
Ishii, Tadao, et al.. (1969). High Resolution Nuclear Magnetic Resonance Spectra of Medel Compounds Related to Lignin with DMSO as NMR Solvent. The Journal of the Society of Chemical Industry Japan. 72(1). 346–352. 5 indexed citations
16.
Ishii, Tadao, et al.. (1968). Activity Test of Hydrogenation Catalysts under High Pressure by Differential Thermal Analysis. The Journal of the Society of Chemical Industry Japan. 71(11). 1783–1787. 8 indexed citations
17.
Shimokawa, Katsuyoshi, et al.. (1967). Mechanism of Coal Hydrogenolysis under High Pressure. Journal of the Fuel Society of Japan. 46(12). 927–934. 7 indexed citations
18.
Ishii, Tadao, et al.. (1967). Differential Thermal Analysis by Flowing Gas Technique -Dehydrogenation of CuSO4. 5H2O and Oxida tion of UO2-. The Journal of the Society of Chemical Industry Japan. 70(10). 1652–1656. 4 indexed citations
19.
Takeya, Gen, et al.. (1966). An Apparatus for Differential Thermal Analysis under High Pressure and its Application to the Study of Liquid Phase Hydrogena tion of Aromatic Substances. The Journal of the Society of Chemical Industry Japan. 69(9). 1654–1658. 5 indexed citations
20.
Suzuki, Akira, et al.. (1966). Study of the Structure of Quinoline Extracts from Yubari Coal by High Resolution. Journal of the Fuel Society of Japan. 45(12). 859–867. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by S. Parkash Breakdown of academic impact, for papers by Masataka Makabe Breakdown of academic impact, for papers by Klaus H. Altgelt Breakdown of academic impact, for papers by Junwen Gao Breakdown of academic impact, for papers by Fred W. Steffgen Breakdown of academic impact, for papers by Rafael Cabanzo Breakdown of academic impact, for papers by B. Ignasiak Breakdown of academic impact, for papers by Zhi-Hao Ma Breakdown of academic impact, for papers by Andrzej Krztoń Breakdown of academic impact, for papers by Menglong Niu
Rankless by CCL
2026