Part 5 of 6 in the MaxisRichards.com Patent Research Series.
This entry focuses on silent, subliminal, and post-hypnotic influence systems. The mechanisms differ, so the record is organized by what each patent actually claims.
What a patent establishes: A patent records what an inventor claimed and disclosed. It does not, by itself, prove that every embodiment works as described, that a system was deployed operationally, or that it was used against any specific person. This series separates the patent record from interpretation.
Patent Records
These patents go beyond simple subliminal advertising—they describe systems that embed commands in audio, visual media, and environmental carriers to alter behavior without conscious awareness. Several explicitly mention electromagnetic triggers.
US5159703A – “Silent subliminal presentation system” (Lowery)
- Inventor: Oliver M. Lowery | Filed: December 28, 1989 | Granted: October 27, 1992
- Summary: Uses low‑ or high‑frequency non‑aural audio or ultrasonic carriers amplitude‑ or frequency‑modulated with information, propagated by loudspeakers, earphones, or piezoelectric transducers.
- TI community relevance: Documents non-aural or ultrasonic carrier methods for presenting information below ordinary conscious hearing.
- View patent
US5270800A – “Subliminal message generator” (Sweet)
- Inventor: Robert L. Sweet | Filed: August 28, 1991 | Granted: December 14, 1993
- Summary: Video subliminal/supraliminal message generator for television or computer displays.
- View patent
US4616261A – “Method and apparatus for generating subliminal visual messages”
- Inventor: Thomas M. H. Crawford | Filed: October 31, 1984 | Granted: October 7, 1986
- Summary: Embeds subliminal visual messages in standard video signals.
- View patent
US5425699A – “Method of modifying human behavior using signal triggered post‑hypnotic suggestion” (Speigel)
- Inventor: Robert B. Speigel | Filed: April 13, 1992 | Granted: June 20, 1995
- Summary: A subject is first hypnotized and given a post‑hypnotic suggestion that is later triggered by an automatically generated active signal—which may be electromagnetic.
- TI community relevance: Documents a post-hypnotic suggestion system triggered by a later signal; it depends on prior hypnosis and should not be described as stand-alone remote mind control.
- View patent
US5245666A – “Personal subliminal messaging system”
- Inventor: Ronald E. Mikell | Granted: September 14, 1993
- Summary: A wearable device that delivers subliminal messages to the wearer.
- View patent
US5784124A – “Supraliminal method of education with particular application behavior modification”
- Inventor: Steven J. Katz | Granted: July 21, 1998
- Summary: Audio‑visual supraliminal programming for behavior modification.
- View patent
Continue the Patent Research Series
← Previous: Synthetic Telepathy Patents · Series Index · Next: Dream & Sleep Patents →
- Voice-to-Skull Patents: Microwave Hearing and Radio-Frequency Auditory Effects
- Remote Neural Monitoring Patents: Brainwave Sensing, Communication, and Inner-Voice Research
- Electromagnetic Neuromodulation Patents: Nervous-System Effects, Sensory Resonance, and RF Systems
- Synthetic Telepathy and Ultrasound Patents: Direct Communication and Noninvasive Neuromodulation
- Subliminal Influence Patents: Silent Messaging and Behavior-Modification Systems
- Dream and Sleep Manipulation Patents: REM Detection, Sensory Input, and Sleep-State Technology
Author’s note: This content presents research, analysis, and opinion about public patent records. It is published for documentation, education, advocacy, and public discussion.