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USPTO Patent Rankings Data through Dec 31, 2025
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Eng-Pi Chang — 22 Patents

ADAvery Dennison: 18 patents #27 of 1,021Top 3%
HPHooker Chemicals & Plastics: 3 patents #14 of 117Top 15%
Dow Corning: 1 patents #971 of 1,768Top 55%
Grand Island, NY: #17 of 278 inventorsTop 7%
New York: #6,196 of 115,490 inventorsTop 6%
Overall (All Time): #189,202 of 4,157,543Top 5%
22 Patents All Time
Eng-Pi Chang has been granted 22 US patents while listed as an inventor at Avery Dennison. The first was granted in 1980 and the most recent in October 2013. Eng-Pi Chang ranks #189,202 of 4,157,543 US inventors in our database (top 4.6%). Patent records list Eng-Pi Chang in Grand Island, NY, US.

Issued Patents All Time

Showing 1–22 of 22 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8551391 Method of making microneedles Philip Chu, Hsiao-Ken Chuang, Kejian (Kevin) Huang, Michael Lang, Reza Mehrabi +3 more 2013-10-08 $5,555,000
7514045 Covered microchamber structures Craig S. Corcoran, Cindy Chiu, William Jaecklein, Dong-Tsai Hseih, Le-Hoa Hong +4 more 2009-04-07 $6,222,000
7416692 Process and apparatus for microreplication Rishikash K. Bharadwai, Philip Chu, Hsiao-Ken Chuang, David N. Edwards, Robert Fermin +4 more 2008-08-26 $27,294,000
6835462 Conformable and die-cuttable biaxially oriented films and labelstocks Edward I. Sun, Ramin Heydarpour, Karl Josephy, Johannes Schut, Yao-Feng Wang 2004-12-28 $16,325,000
6706355 Protective coating for color filters Daniel L. Holguin 2004-03-16 $14,571,000
6703463 Optical adhesive coating having low refractive index Daniel L. Holguin 2004-03-09 $46,166,000
6686431 Optical coating having low refractive index H. Paul Barker, Daniel L. Holguin 2004-02-03 $23,925,000
6663947 Multilayer films and labels Melvin S. Freedman, Ramin Heydarpour, Donald F. Kimes, Mitchell J. Rackovan, Karl Josephy +3 more 2003-12-16 $18,073,000
6461706 Multilayer films and labels Melvin S. Freedman, Ramin Heydarpour, Donald F. Kimes, Mitchell J. Rackovan, Karl Josephy +3 more 2002-10-08 $8,469,000
6416858 Multilayer pressure-sensitive adhesive construction Jesse C. Ercillo, Roger H. Mann, Karl Josephy, Luigi Sartor, Yukihiko Sasaki +1 more 2002-07-09 $15,724,000
6376058 Polypropylene based compositions and films and labels formed therefrom Johannes Schut, Coen van Tol, Mitchell J. Rackovan, Paul McCaslin 2002-04-23 $10,757,000
6372074 Method of forming a protective coating for color filters Daniel L. Holguin 2002-04-16 $38,468,000
6296727 Method for ultrasonically sealing a plastic film composed of polypropylene Edward I. Sun, Edward Podosek 2001-10-02 $21,490,000
5961766 Method for selecting a substrate intended for use in a cutting operation Yao-Feng Wang 1999-10-05 $26,532,000
5827609 Multilayer Pressure-sensitive adhesive construction Jesse C. Ercillo, Roger H. Mann, Karl Josephy, Luigi Sartor, Henk de Konig +1 more 1998-10-27 $32,922,000
5700571 Release films formed by coextrusion Daniel R. Logue, Piet T. Van Emmerik, Roger H. Mann, Edward I. Sun, Gary A. Avalon +2 more 1997-12-23 $9,408,000
5690628 Refastenable adhesive taping system Richard A. Huskey, Carol A. Caldwell, Gary A. Avalon, Yung Hsiang Huang, Dave Allen Soerens +1 more 1997-11-25 $13,558,000
5556663 Excimer fluorescence method for determining cure of coatings Yao-Feng Wang, Mitchell A. Winnik, Maris J. Ziemelis 1996-09-17 $11,544,000
5545830 Curable fluorescent organopolysiloxane compositions Maris J. Ziemelis, Mitchell A. Winnik 1996-08-13 $7,956,000
4342636 Process for forming a porous polyfluoroalkylene sheet useful for separating anolyte from catholyte in electrolytic cells Christine A. Lazarz, Edward H. Cook, Jr. 1982-08-03
4292146 Porous polyfluoroalkylene sheet useful for separating anolyte from catholyte in electrolytic cells Christine A. Lazarz, Edward H. Cook, Jr. 1981-09-29
4194072 Flame retardant nylon compositions Charles S. Ilardo, Eugene L. Slagowski 1980-03-18