Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
HL

Howard M. Leibowitz — 3 Patents

3M: 3 patents #4,239 of 11,543Top 40%
Weston, MA: #184 of 466 inventorsTop 40%
Massachusetts: #33,867 of 88,656 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Howard M. Leibowitz has been granted 3 US patents while listed as an inventor at 3M. The first was granted in 1991 and the most recent in February 1996. Howard M. Leibowitz ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Howard M. Leibowitz in Weston, MA, US.

Patents per Year

Patents granted per year, 1991 to 1996Bar chart with a peak of 1 patents in 1991.peak 11991: 1 patents19911992: 1 patents19921996: 1 patents1996

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5489300 Surgical method for implanting a corneal implant John T. Capecchi, Carl Franzblau, Donald F. Gibbons, William B. Isaacson, Manley R. Johnston +2 more 1996-02-06 $19,504,000
5108428 Corneal implants and manufacture and use thereof John T. Capecchi, Carl Franzblau, Donald F. Gibbons, William B. Isaacson, Manley R. Johnston +2 more 1992-04-28 $8,671,000
5032131 Prosthesis holding device James E. Aysta, John T. Capecchi, Carl Franzblau, Donald F. Gibbons, Randall L. Knoll +1 more 1991-07-16 $10,219,000