Inventor
JOHN CHANG
Inventor
US
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Mprimary
A61MDevices for introducing media into, or onto, the body43%
LOC2421%
F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact7%
F28FDetails of heat-exchange and heat-transfer apparatus, of general application7%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices7%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy7%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution7%
PatentTitleYear
12,585,182Overlay correction for advanced integrated-circuit devices202612,433,974Breast pump systems and methods202512,370,292Breast pump assembly202512,322,778Compact temperature control system and method for energy modules202512,208,185Breast pump housing and flange assembly202511,951,238Breast pump assembly and methods2024D0998137Flange for a breast pump202311,660,380Breast pump system with collection container2023D0977625Breast pump202311,534,535Breast pump containers and methods2022D0958963Container assembly for a breast pump2022Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2022–2025Patents assigned to WILLOW INNOVATIONS INC (9)· patent assignee history
2022Patents assigned to EXPLORAMED NC7 INC (1)· patent assignee history
2022–2025Based in US· patent location history
2025Patents assigned to EAGLEPICHER TECHNOLOGIES LLC (1)· patent assignee history
2025Patents assigned to L LIVERMORE NAT SECURITY LLC (1)· patent assignee history
2026Patents assigned to ONTO INNOVATION INC (1)· patent assignee history
2026Based in TW· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WILLOW INNOVATIONS INC | 9 | 2022–2025 |
| EAGLEPICHER TECHNOLOGIES LLC | 1 | 2025 |
| EXPLORAMED NC7 INC | 1 | 2022 |
| L LIVERMORE NAT SECURITY LLC | 1 | 2025 |
| ONTO INNOVATION INC | 1 | 2026 |
Locations
| Location | Patents | Span |
|---|---|---|
| US | 10 | 2022–2025 |
| TW | 1 | 2026 |