Google Patents, 2026-10-04
URLs: https://patents.google.com/patent/US3610971A/en, https://patents.google.com/patent/US3656013A/en, https://patents.google.com/patent/FR2039172A1/fr, and an assignee query (assignee="Electrodynamic Gravity"). Access: the Chrome page rendered blank to text extraction, so the pages were fetched with curl and parsed. Copies are saved as files/hooper-US3610971A.html, files/hooper-US3656013A.html and files/googlepatents-FR2039172A1.html. Result: positive.
Findings
- Patent family of US 3,610,971 [web] https://patents.google.com/patent/US3610971A/en - Application US816366A, priority and filing 1969-04-15, granted 1971-10-05. Expired 1988-10-05. - Foreign member: FR 2 039 172 A1, application FR6927984A, filed 1969-08-14, published 1971-01-15, status "Withdrawn". The applicant is ELECTRODYNAMIC GRAVITY. It is classed H01F6/00 (superconducting magnets) [web] https://patents.google.com/patent/FR2039172A1/fr. - The French text was not on the page. Leads: the INPI or Espacenet full text, and the reason for withdrawal.
- US 3,656,013 is the parent application Ser. No. 722,587 [web] https://patents.google.com/patent/US3656013A/en - Application US722587A, filed 1968-04-19, granted 1972-04-11, assignee Electrodynamic Gravity Inc. - This settles which document the parent "Ser. No. 722,587" cited in US 3,610,971 col.1 is. The other parent, Ser. No. 803,187 (filed 28 Feb 1969, "electrical receiving methods"), does not appear among the assignee's granted patents.
- Assignee query ("Electrodynamic Gravity") returned only these two US patents [web] https://patents.google.com/?assignee=Electrodynamic+Gravity.
- Cited-by lists (later patents citing Hooper; related work, priority 3).
- US 3,610,971 is cited by:
- GB2355599A / US20030114313A1 (Worsley, WWK Trust: force on a rotating superconductor; "warp drive" specifications);
- US20050030139A1 / US20050099761A1 (PST Associates: "Field converter for thrust generation");
- US9337752B2, US10084395B2 and US10320312B2 (Richard Banduric: "complex electric fields and static electric fields to effect motion");
- WO2004082118A1 (static electric power generator).
- The page lists 17 citing documents in total; only 10 were extracted.
- US 3,656,013 is cited by:
- US5844345A (Lockheed Martin Energy Research: homopolar motor with dual rotors);
- RU2458448C1 (Siberian Federal University: linear induction machine);
- US10830589B2 (Western Michigan University: magnetic-nanoparticle gyroscopic sensor);
- the Banduric and PST patents above.
- Banduric's patents are the closest later restatement of the idea that superposed fields cancel B but leave a net electric effect. They are worth reading against Hooper's claim 2.
- Examiner citations for US 3,610,971: Shaw US2553875 (electric heating element) and Varian US3259784 ("Non-inductive wire configurations"). This shows the examiner treated the coil as a known non-inductive winding.
Queries
- Direct patent pages: US3610971A, US3656013A, FR2039172A1
- Assignee query: "Electrodynamic Gravity"