Inventor · disambiguated record
Roy Douglas
Also filed as: DOUGLAS ROY · DOUGLAS ROY S
3 granted patents·4 pending applications·27 citations·filing 1996–2022
63Inventor score
Top patents by PatentIndex Score
7 records- 0163US2025027610A1Method of compressing hydrogen gas, hydrogen gas compressor system and hydrogen gas storage unitCATAGEN LTD·Filed 2022·Application pending·0 cites
- 0263US2025027611A1Method of compressing hydrogen gas, hydrogen gas compressor system and hydrogen gas storage unitCATAGEN LTD·Filed 2022·Application pending·0 cites
- 0355US5815964AHidden message greeting cardFiled 1996·Granted Oct 6, 1998·26 cites·3 claims
- 0449US9061274B2Method and apparatus for testing a catalyst materialUNIV BELFAST·Filed 2014·Granted Jun 23, 2015·0 cites·16 claims
- 0549US2025010237A1Carbon dioxide capture in water system and methodCATAGEN LTD·Filed 2022·Application pending·0 cites
- 0648US8753996B2Method and apparatus for testing a catalyst materialDOUGLAS ROY·Filed 2009·Granted Jun 17, 2014·1 cites·13 claims
- 0739US2018306329A1Reciprocating expander valveGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →