Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Guy BOURASSA — 23 Patents

NLNemaska Lithium: 23 patents #1 of 20Top 5%
Quebec City, CA: #12 of 242 inventorsTop 5%
Overall (All Time): #178,160 of 4,157,543Top 5%
23 Patents All Time
Guy BOURASSA has been granted 23 US patents while listed as an inventor at Nemaska Lithium. The first was granted in 2016 and the most recent in September 2025. Guy BOURASSA ranks #178,160 of 4,157,543 US inventors in our database (top 4.3%). Patent records list Guy BOURASSA in Quebec City, QC, CA.

Issued Patents All Time

Showing 1–23 of 23 patents

Patent #TitleCo-InventorsDate
12410531 Processes for preparing lithium hydroxide Jean-François Magnan, Gary Pearse, Peter Symons, J. David Genders 2025-09-09
12275650 Processes for preparing hydroxides and oxides of various metals and derivatives thereof Thomas BIBIENNE, Nicolas LAROCHE, Jean-François Magnan, Mathieu CHARBONNEAU, Mickaël DOLLÉ +1 more 2025-04-15
12168811 Processes for preparing lithium carbonate Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas, Peter Symons, J. David Genders +2 more 2024-12-17
12006231 Processes for preparing hydroxides and oxides of various metals and derivatives thereof Jean-François Magnan, Nicolas LAROCHE, Thomas BIBIENNE, Mathieu CHARBONNEAU, Mickaël DOLLÉ 2024-06-11
11697861 Processes for preparing lithium carbonate Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas, Peter Symons, J. David Genders +2 more 2023-07-11
11634336 Processes for preparing lithium carbonate Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas 2023-04-25
11542175 Processes for preparing hydroxides and oxides of various metals and derivatives thereof Jean-François Magnan, Nicolas LAROCHE, Thomas BIBIENNE, Mathieu CHARBONNEAU, Mickaël DOLLÉ 2023-01-03
11519081 Methods for treating lithium-containing materials Jean-François Magnan, Nicolas LAROCHE, Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas +4 more 2022-12-06
11254582 Processes for preparing lithium carbonate Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas 2022-02-22
11142466 Processes for preparing hydroxides and oxides of various metals and derivatives thereof Jean-François Magnan, Nicolas LAROCHE, Thomas BIBIENNE, Mathieu CHARBONNEAU, Mickaël DOLLÉ 2021-10-12
11085121 Methods for treating lithium-containing materials Jean-François Magnan, Nicolas LAROCHE, Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas +4 more 2021-08-10
11083978 Processes for treating aqueous compositions comprising lithium sulfate and sulfuric acid Jean-François Magnan, Nicolas LAROCHE, Bertin OUELLET, Clive Brereton, Steven BUCHI +1 more 2021-08-10
11078583 Processes for preparing lithium hydroxide Jean-François Magnan, Gary Pearse, Peter Symons, J. David Genders 2021-08-03
10800663 Processes for preparing lithium carbonate Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas 2020-10-13
10633748 Processes for preparing lithium hydroxide Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas, Peter Symons, J. David Genders +1 more 2020-04-28
10597305 Methods for treating lithium-containing materials Jean-François Magnan, Nicolas LAROCHE, Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas +5 more 2020-03-24
10544512 Methods for treating lithium-containing materials Jean-François Magnan, Nicolas LAROCHE, Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas +4 more 2020-01-28
10144990 Processes and systems for preparing lithium carbonate Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas, Peter Symons, David Genders +2 more 2018-12-04
10066305 Processes for preparing lithium hydroxide Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas, Peter Symons, J. David Genders +1 more 2018-09-04
10036094 Processes and systems for preparing lithium hydroxide Jean-François Magnan, Gary Pearse, Peter Symons, David Genders, Geneviève CLAYTON 2018-07-31
9890053 Processes for preparing lithium carbonate Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas 2018-02-13
9677181 Processes for preparing lithium hydroxide Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas, J. David Genders, Peter Symons +1 more 2017-06-13
9382126 Processes for preparing lithium carbonate Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas 2016-07-05