Jerry E. Frease has been granted 9 US patents while listed as an inventor at Jennmar . The first was granted in 1986 and the most recent in April 1996. Jerry E. Frease ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Jerry E. Frease in Marion, IL, US.
Patents per Year Patents granted per year, 1986 to 1996 Bar chart with a peak of 2 patents in 1991. peak 2 1986: 1 patents 1986 1987: 1 patents 1987 1991: 2 patents 1991 1992: 1 patents 1992 1993: 1 patents 1993 1994: 1 patents 1994 1995: 1 patents 1995 1996: 1 patents 1996
Issued Patents All Time
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Showing 1–9 of 9 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
5505562 Mechanical truss wrench John C. Stankus 1996-04-09
5450663 Method for fabricating a truss member for a mine roof support Frank Calandra, Jr. , Lajos Kovacs , John C. Stankus , Eugene H. Stewart 1995-09-19
5302056 Method and apparatus for supporting a mine roof Frank Calandra, Jr. , Lajos Kovacs , John C. Stankus , Eugene H. Stewart 1994-04-12
5244314 Expansion assembly Frank Calandra, Jr. , John C. Stankus 1993-09-14
5082399 Mine roof anchor having adjustable resin retaining washer and expansion shell assembly with friction reducing means John C. Stankus , Eugene H. Stewart , Glen S. Grissinger 1992-01-21
5076733 Mine roof anchor assembly having an expansion shell assembly with a friction reducing means — 1991-12-31
5064312 Delay stopper for a mine roof anchor and method of manufacture thereof Frank Calandra, Jr. 1991-11-12
4664561 Combined resin-mechanical mine roof bolt anchor — 1987-05-12
$130,000
4596496 Mine roof supporting truss system Gary D. Tyrell , Robert W. Hill 1986-06-24
$136,000