Inventor · Philadelphia, PA, US

Eric Chang

30Patents
8h-index
13Co-inventors
68Inventor score

Filing activity: Aug 10, 2004 → Jun 9, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US8720444B2 Breathing assistance apparatus having floating function Human Necessities 54 Active
US7581718B1 Atomizer Performing Operations; Transporting 33 Active
USD612483S1 Face mask General 25 Expired
US7243652B2 Respirator mask Human Necessities 13 Expired
US7559491B1 Atomizer Performing Operations; Transporting 12 Active
US10603457B2 Respiratory mask Human Necessities 10 Active
USD881382S1 Nasal cannula General 8 Active
US8176919B2 Respiratory mask including an adjustable forehead abutment member Human Necessities 8 Active
US8151797B2 Respiration mask assembly Human Necessities 8 Active
US10896590B2 Tamper resistant one-time use wristband and clasp and algorithm to enhance the practical use of radio frequency for proximity between two or more entities Electricity 7 Active
US8069855B2 Respiratory mask Human Necessities 6 Active
US11210918B2 Tamper resistant one-time use wristband and clasp and algorithm to enhance the practical use of radio frequency for proximity between two or more entities Electricity 5 Active
US8365735B2 Respiratory mask including an adjustment unit Human Necessities 5 Active
US9155561B2 Mini-rail external fixator Human Necessities 4 Active
US8156935B2 Respiratory tube assembly Human Necessities 4 Active
US8225793B2 Respiratory mask device having improved head strap connectors Human Necessities 3 Active
US11682283B2 Tamper resistant one-time use wristband and clasp and algorithm to enhance the practical use of radio frequency for proximity between two or more entities Electricity 3 Active
US7089943B2 Laryngeal mask Human Necessities 3 Expired
US9622781B2 Mini-rail external fixator Human Necessities 2 Active
US10306833B2 Mower deck with a three-dimensional single belt transmission Performing Operations; Transporting 2 Active
US7322351B2 Respiratory mask Human Necessities 1 Expired
US11450228B2 Pointer for focused reading Physics 1 Active
US9186180B2 Rose gear for external fixation clamp Human Necessities 1 Active
US11117436B2 Vehicle suspension system Performing Operations; Transporting 1 Active
US11744956B2 Medical sharp removal and storage device Electricity 0 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.