I have had hundreds of ideas for inventions written up in my private notebooks, but only a few have been developed fully. For my De-diffraction research please look in the Physics pages. For my 3 Dimensional Drawing Instruments see the 3DD pages. The following links open the patents as pdfs in new browser pages. Please use the browser back arrows to return to this page.

3 Dimensional Drawing Instrument (Japan Patent No. 762196 . 50.3.24) Dediffraction Method (US Patent 1992)
Perspective Drawing Instrument (US Patent 1987) Dediffraction Method Improvement (US Patent 1995)
Arabic Printing Type Improvement (UK Patent 1965) Binocular camera focusing (Japanese patent application 1983)
Shadow drawing instrument (Japanese patent appliction 1982)