% 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),

Company Overview

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 synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#64 in Burnaby

#3,466 in Canada

Burnaby, Canada

Day4 Energy Inc.

Forward Citations = 110

5 inventors:

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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Day4 Energy Inc.. Retrieved from https://idiyas.com/company/day4-energy

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

1 patent (CIPO):

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]