2026-10-04 Japanese Wikipedia (ja.wikipedia.org)
Page: 清家新一 (Seike Shin'ichi), https://ja.wikipedia.org/wiki/清家新一, read in Chrome. Translation is mine. [web]
The book's "Professor Shinichi Seiki, Uwajima City, Ehime Prefecture" (p.82-83) is Seike Shin'ichi (清家新一): born April 1936 (birth date marked "citation needed") in Uwajima, Ehime; died 30 December 2009, aged 73. - Education: master's course, graduate school of science, University of Tokyo (数物系大学院修士課程). - Taught mechanical engineering at Ibaraki University and physics at Ehime Teikyo Junior College. - 1969: published "Ultra-Relativity theory" (超相対性理論). 1973: founded the private "Gravity Research Institute" (重力研究所) at Nagahori, Uwajima (later "Space Research Institute", 宇宙研究所). Projects: gravity-cancellation experiments, prototype "flying saucers", time-machine theory and prototypes, a "graviton reactor". The page states, as the article's characterization: he published many books and papers with titles suggesting completion was near, "but nothing has yet been completed". - Published the magazine 『宇宙艇』 (Uchūtei, "Space Craft") from 1973 to issue 163 (1998). - The page reports Seike's own statement that as a student he received a love letter from a Martian woman (sourced to Yamamoto 1995, a sceptics' "tondemo-bon" book; an interested, debunking source). - Books (selection): 『空飛ぶ円盤製作法』 How to Build a Flying Saucer (1975); 『実験円盤浮上せり』 The Experimental Disc Has Risen (1976); 『超相対性理論』 (5th rev. ed. 1978, Gravity Research Institute; 13th ed. 1999); 『円盤機関始動せり』 (1978); 『UFOと新エネルギー』 (1980); 『逆重力機関の組立方』 How to Assemble an Anti-Gravity Engine (5th ed. 1982); 『空飛ぶ円盤完成近し』 (1983); 『消えた地球重力』 (1984). - Papers listed: "Equation of relativistic spin waves"; "Self-excited NMR of negative energy [I], [II], (No.3)"; "Gravitational field of antiparticles"; "Klein's one-sided electromagnetic wave"; "Gravity cancellation experiment"; "Graviton reactor"; and later time-machine papers. CiNii identifies these as Physical Society of Japan meeting abstracts (see the cinii and jstage notes).
Bearing: it confirms that the book's Seiki is a real, university-trained physicist who ran a private institute (priority 3; for the book, priority 2/3 because Seike is one of its sources). The von Braun meeting (book p.83) is not mentioned. The period 1973-1984 overlaps the book. Note the Japanese record's own framing: a sceptical 1995 book (Yamamoto, Tondemo-bon no sekai, pp.227-238) is the page's main biographical source.