US2684330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of renewing diffuser units
Assignee: Individual
•
Filing: 1950-03-31
•
Granted: 1954-07-20
•
Expires: 1970-03-31
Abstract
No abstract record available.
Inventors
- 👤 Richard C French
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:46
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/20; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/231; B01F23/23105; B01F23/2312; B01F23/23123; B01F35/00; B01F35/10; B01F35/145; B01F35/1452; B01F35/1453; B01F23/23126; B01F23/231261; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
METHOD OF RESTORING THE POROSITY OF ALUMINUM OXIDE DIFFUSER UNITS, INCLUDING THE STEPS OF DIRECTING A SHEET-LIKE FLAME AGAINST ONE SURFACE OF THE UNIT, MAINTAINING THE FLAME AT A FIXED DISTANCE FROM THE SURFACE WHILE EFFECTING CONTINUOUS UNIFORM RELATIVE MOVEMENT OF SAID UNIT AND SAID FLAME IN A DIRECTION NORMAL TO THE WIDTH OF THE FLAME, REMOVING MATERIAL THUS FREE FROM THE INTERSTICES OF SAID ONE SURFACE, AND DIRECTING A STREAM OF LIQUID SUBSTANTIALLY AT RIGHT ANGLES AGAINST SAID ONE SURFACE AT HIGH PRESSURE TO REMOVE ADDITIONAL OBSTRUCTIVE MATERIAL BY RAMMING ACTION.
Claim 2
Dependent Claim
92 words
METHOD OF RESTORING THE POROSITY OF ALUMINUM OXIDE DIFFUSER UNITS, INCLUDING THE STEPS OF DIRECTING A SHEET-LIKE FLAME AGAINST ONE SURFACE OF THE UNIT, MAINTAINING THE FLAME AT A FIXED DISTANCE FROM THE SURFACE WHILE EFFECTING CONTINUOUS UNIFORM RELATIVE MOVEMENT OF SAID UNIT AND SAID FLAME IN A DIRECTION NORMAL TO THE WIDTH OF THE FLAME, REMOVING MATERIAL THUS FREE FROM THE INTERSTICES OF SAID ONE SURFACE, AND DIRECTING A STREAM OF LIQUID SUBSTANTIALLY AT RIGHT ANGLES AGAINST SAID ONE SURFACE AT HIGH PRESSURE TO REMOVE ADDITIONAL OBSTRUCTIVE MATERIAL BY RAMMING ACTION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |