Rigorous peer-reviews are the basis of high-quality academic publishing. Thanks to the great efforts of our reviewers, Inventions was able to maintain its standards for the high quality of its published papers. Thanks to the contribution of our reviewers, in 2021, the median time to first decision was 20 days and the median time to publication was 41 days. The editors would like to extend their gratitude and recognition to the following reviewers for their precious time and dedication, regardless of whether the papers they reviewed were finally published:
| Adrian Gligor | Kejun Wu |
| Adrian Nedelcu | Khairullo Faizullaevich Makhmudov |
| Ahmed Shaker | Kimmo Kauhaniemi |
| Ahmet Shala | Klaus Bogenberger |
| Alberto Gianinetti | Kok Hoe Wong |
| Alberto Muscio | Kotb Tawfiq |
| Aleksei Rozhnov | Kung-Ming Chung |
| Aleksejs Zacepins | Kwok-wing Chau |
| Alexandu Vulpe | L’udmila Dulebová |
| Alina Adriana Minea | Laibao Zhang |
| Alon Davidy | László Almásy |
| Amir M. Anvar | Laura Bulgariu |
| Andrés Feijóo | Lecturer Carmen Rodica Pop |
| Andrzej Gajewski | Leila Marek-Crnjac |
| Anna Stoppato | Lucian Dulău |
| Anthony R. Lupo | Lucjan Kozielski |
| Antonio Greco | Luis Norberto López De Lacalle |
| Antonio Menor-Campos | M. Estela Peralta |
| Anuj Kumar | Maciej Dzikuć |
| Arash Ebneali Samani | Magdalena Skarzynska |
| Arkadiusz Bednarz | Magdalena Żuk |
| Armando Fontalvo | Mahmoud A. Khader |
| Aron Perenyi | Manuel Jesús Espinosa |
| Arthur E. P. Veldman | Marcello Trovati |
| Bagh Ali | Marco Fontanelli |
| Beatriz González | Marcos Tostado-Véliz |
| Bikash Rajan Parida | María De Las Nieves González |
| Björn Roscher | Mário W. L. Moreira |
| Buzdugan Mircea Ion | Mariusz Ciesielski |
| Capace Alessia | Matthew Hobbs |
| Carl Strathearn | Mauro Chinappi |
| Chaomin Zhang | Md Rabiul Islam |
| Chin-Ling Chen | Md Saiful Bari |
| Cristina Campano | Michal Borecki |
| Dadmehr Rahbari | Michał Strzelecki |
| Dagong Jia | Mihai Zaharia |
| Daniela Chicet | Mingyang Lu |
| Danuta Miedzińska | Mircea Viorel Drăgoi |
| Dario Pasini | Miroslaw Bajda |
| David Cabaleiro | Mohammad Safeea |
| Den Boychuk | Mohammad Shojafar |
| Dennis Touliatos | Mohammad Yaghoub Abdollahzadeh Jamalabadi |
| Diego Antolín | Mohammadali Hedayat |
| Dmitriy Shurpik | Mohsen Saffari Pour |
| Dominika Kaczorowska | Moussa Boukhnifer |
| Dragos Isvoranu | Muhammad Abdul Qyyum |
| Dror Malka | Nabilah Shamim |
| Dwueng-Chwuan Jhwueng | Nataliya Sakharova |
| Edorta Carrascal Lekunberri | Nathalie Sauer |
| Eduardo Tolosana | Nicolae Tudoroiu |
| Elena Popa | Nikolaos V. Kantartzis |
| Eleni Douvi | Nikolay Ivanov |
| Elliot Taffet | Nikos Karayiannis |
| Emerson Giovani Carati | Noura Dosoky |
| Evangelos Bellos | Nuria Huete |
| Fabrizio Amisano | Octavian Fratu |
| Fernando Feijoo | Oday Ibraheem Abdullah |
| Fernando Pérez-Porras | Olga Orynycz |
| Florin Postolache | Oscar Alfranca |
| Francisca Rodrigues | Paolo Mercorelli |
| Francisco Vega Reyes | Paraskevas Nikolaou |
| François Gannier | Parham Nooralishahi |
| Gabriel Negreanu | Paweł Krzaczek |
| Georgios Ntinas | Peter Ampim |
| Georgios Pipintakos | Peter Bindzár |
| Gianvito Scaringi | Poushali Das |
| Giorgio Lofrese | Prodip K. Das |
| Giorgio Sonnino | Rafael Sola-Guirado |
| Grzegorz Wiczyński | Randy Oliver |
| Guan Lin | Raouf Senhadji-Navarro |
| Guillermo Huerta Cuellar | Reiner Kriesten |
| Habib Rahman | Ricardo Vardasca |
| Hakeem Niyas | RizwanAli Naqvi |
| Hanna Kowalska | Robert Thresher |
| Henryk Kania | Rodica Margaoan |
| Hesheng Wang | Rodolfo Picchio |
| Hongliang Luo | Rosen Mitrev |
| Hongtian Chen | Rui Antunes |
| Hyo Jong Lee | Rui M. S. Cruz |
| Ilaria Campioni | Ryo Kohsaka |
| Ilaria Perissi | Salim Lamine |
| Iosif-Vasile Nemoianu | Salman Arain |
| Iraklii I. Ebralidze | Sandra Costanzo |
| Irina Cherunova | Silvana Alfei |
| Ismail Fidan | Soheil Jafari |
| Jerzy Sowa | Susmit Bagchi |
| Jesus Manuel Fernandez Oro | Syed Basit Ali Bukhari |
| Jong-Suk Ro | Tatiana Morosuk |
| José Gamonales | Tomasz Kałuża |
| Jozef Husár | Younes El Kacimi |
| Jui-Yung Chang | Yudhi Adhitya |
| Jun-ichi Kadokawa | Yun Zhang |
| Katarzyna Lewandowska | Zbigniew Leonowicz |
| Katsuhiko Ariga |
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