% Expired Patents = 50.0

CIPO Patents = 1

Forward Citations = 110

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5 inventors (with patents filed for the assignee):

Leonid B Rubin (4 out of 4 patents)

George L Rubin (3 out of 3 patents)

Alexander Osipov (2 out of 2 patents)

4. Bram M Sadlik (1 out of 6 patents)

5. Andreas Schneider (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 8293568 - Crystalline silicon PV cell with selective emitter produced with low temperature precision etch back and passivation process (2012-10-23),

2. 8013239 - Electrode for photovoltaic cells, photovoltaic cell and photovoltaic module (2011-09-06),

3. 7498508 - High voltage solar cell and solar cell module (2009-03-03),

4. 7432438 - Electrode for photovoltaic cells, photovoltaic cell and photovoltaic module (2008-10-07),

Day4 Energy Inc. is a global provider of innovative solar photovoltaic (PV) solutions. The company specializes in high-performance PV modules, intelligent energy management systems, and turnkey solar power plants. With a focus on efficiency and sustainability, Day4 Energy is committed to reducing the world's carbon footprint through clean energy technology.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

4 Patents

#64 in Burnaby

#3,459 in Canada

Burnaby, Canada

Day4 Energy Inc.