RL

Ralph C. Longsworth

SA Sumitomo (Shi) Cryogenics Of America: 25 patents #1 of 19Top 6%
AC Apd Cryogenics: 17 patents #1 of 19Top 6%
Air Products And Chemicals: 14 patents #129 of 1,997Top 7%
SC Shi-Apd Cryogenics: 10 patents #1 of 8Top 15%
SI Sumitomo Heavy Industries: 9 patents #31 of 917Top 4%
IG Intermagnetics General: 2 patents #7 of 29Top 25%
📍 Allentown, PA: #3 of 1,150 inventorsTop 1%
🗺 Pennsylvania: #324 of 74,527 inventorsTop 1%
Overall (All Time): #28,578 of 4,157,543Top 1%
71
Patents All Time

Issued Patents All Time

Showing 51–71 of 71 patents

Patent #TitleCo-InventorsDate
5249425 Venting control system for cryostats 1993-10-05
5243826 Method and apparatus for collecting liquid cryogen 1993-09-14
5012650 Cryogen thermal storage matrix 1991-05-07
4785879 Parallel wrapped tube heat exchanger William A. Steyert 1988-11-22
4781033 Heat exchanger for a fast cooldown cryostat William A. Steyert 1988-11-01
4763725 Parallel wrapped tube heat exchanger William A. Steyert 1988-08-16
4697635 Parallel wrapped tube heat exchanger William A. Steyert 1987-10-06
4643001 Parallel wrapped tube heat exchanger William A. Steyert 1987-02-17
4606201 Dual thermal coupling 1986-08-19
4593530 Method and apparatus for improving the sensitivity of a leak detector utilizing a cryopump 1986-06-10
4567943 Parallel wrapped tube heat exchanger William A. Steyert 1986-02-04
4514204 Bakeable cryopump Glenn Eric Bonney 1985-04-30
4484458 Apparatus for condensing liquid cryogen boil-off 1984-11-27
4430863 Apparatus and method for increasing the speed of a displacer-expander refrigerator 1984-02-14
4283948 Cryogenic air sampler 1981-08-18
4279127 Removable refrigerator for maintaining liquefied gas inventory 1981-07-21
4277951 Cryopumping apparatus 1981-07-14
4277949 Cryostat with serviceable refrigerator 1981-07-14
4237699 Variable flow cryostat with dual orifice Matthew G. Chalmers 1980-12-09
4223540 Dewar and removable refrigerator for maintaining liquefied gas inventory 1980-09-23
4219588 Method for coating cryopumping apparatus 1980-08-26