Inventor · disambiguated record
Joseph A. Perri
Also filed as: PERRI JOSEPH · PERRI JOSEPH A
16 granted patents·159 citations·filing 1976–1990
93Inventor score
Top patents by PatentIndex Score
16 records- 0183US4553743AElevated device for placing slag retention means in tapping convertersINSUL CO INC·Filed 1984·Granted Nov 19, 1985·14 cites·4 claims
- 0281US4836433ADevice for introducing stirring gas into molten metal in metered amountINSUL CO INC·Filed 1988·Granted Jun 6, 1989·18 cites·6 claims
- 0378US4687184ADevice for introducing gas into molten metal in a wide annular streamINSUL CO INC·Filed 1986·Granted Aug 18, 1987·16 cites·10 claims
- 0475US4744544ARefractory erosion visual indicatorINSUL CO INC·Filed 1987·Granted May 17, 1988·15 cites·8 claims
- 0573US4610436ASlag retaining device with self-aligning tipINSUL CO INC·Filed 1985·Granted Sep 9, 1986·20 cites·6 claims
- 0668US4637592AElevated swinging device for placing slag retention devices in tapping convertersINSUL CO INC·Filed 1985·Granted Jan 20, 1987·18 cites·3 claims
- 0766US4640498AHorizontally and vertically movable elevated apparatus for placing slag retaining means in tapping convertersINSUL CO INC·Filed 1985·Granted Feb 3, 1987·15 cites·8 claims
- 0863US5065986AAutomatic gas hookup to a ladleINSUL CO INC·Filed 1990·Granted Nov 19, 1991·10 cites·5 claims
- 0952US4783058ALance for treating molten metalINSUL CO INC·Filed 1988·Granted Nov 8, 1988·6 cites·7 claims
- 1046US4552343ACombination electric furnace and slag retaining pouring spoutINSUL CO INC·Filed 1985·Granted Nov 12, 1985·10 cites·11 claims
- 1145US4050668AIngot mold with heat reflecting coverPERRI JOSEPH·Filed 1976·Granted Sep 27, 1977·5 cites·8 claims
- 1244US4898369ALance with metered core for treating molten metalINSUL CO INC·Filed 1989·Granted Feb 6, 1990·5 cites·9 claims
- 1344US4783061ATundish linerINSUL CO INC·Filed 1987·Granted Nov 8, 1988·4 cites·6 claims
- 1437US4186908AExpandable hot top for ingot mouldsINSUL CO INC·Filed 1978·Granted Feb 5, 1980·2 cites·5 claims
- 1531US4783059ATuyere for treating molten metalINSUL CO INC·Filed 1988·Granted Nov 8, 1988·1 cites·6 claims
- 1629US4244552ACorner wedging consumable hot topINSUL CO INC·Filed 1979·Granted Jan 13, 1981·0 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when Joseph A. Perri files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →