Johnson, Jr.; Allen S.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Johnson, Jr.; Allen S..The latest application filed is for "method and apparatus for increasing the efficiency of internal collection filter bags".
- Johnson, Jr.; Allen S. - Salisbury NC
| Patent | Date |
|---|---|
| Method and apparatus for increasing the efficiency of internal collection filter bags Grant 4,401,446 - Johnson, Jr. August 30, 1 | 1983-08-30 |
| Bag-type filter apparatus with air diffuser having extended bag support Grant 4,324,571 - Johnson, Jr. April 13, 1 | 1982-04-13 |
| Bag-type filter with air diffuser tubes of helical construction Grant 4,297,115 - Johnson, Jr. October 27, 1 | 1981-10-27 |
| Bag-type filter apparatus with venturi-supported air diffuser Grant 4,289,511 - Johnson, Jr. September 15, 1 | 1981-09-15 |
| Bag-type filter apparatus with high pressure air jet cleaning Grant 4,280,826 - Johnson, Jr. * July 28, 1 | 1981-07-28 |
| Bag-type filter apparatus with combination bag support and air diffuser Grant 4,259,095 - Johnson, Jr. March 31, 1 | 1981-03-31 |
| Apparatus and method for heating an aggregate material Grant 4,255,131 - Johnson, Jr. March 10, 1 | 1981-03-10 |
| Bag-type filter apparatus with internal air diffuser Grant 4,231,770 - Johnson, Jr. November 4, 1 | 1980-11-04 |
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