US3275560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal cleaning paste
Assignee: Eutectic Corp
•
Filing: 1962-05-23
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Granted: 1966-09-27
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Expires: 1982-05-23
Abstract
No abstract record available.
Inventors
- 👤 Rene D Wasserman
- 👤 Joseph F Quaas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:34
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A METAL CLEANING PASTE CONSISTING ESSENTIALLY OF A MINOR AMOUNT OF FROM 1-20% BY WEIGHT OF FINE PARTICLES OF INERT OXIDE MATERIAL DISPERSED WITHIN A MAJOR AMOUNT OF FROM 80-90% BY WEIGHT OF AN ACTIVE ACID CLEANING SOLUTION, FROM 1-99% BY WEIGHT OF SAID INERT OXIDE MATERIAL CONSISTING ESSENTIALLY OF A MIXTURE OPPROXIMATELY OXIDE OF ONE MICRO PARTICLE SIZE AND SMALLER, THE BALANCE OF SAID INERT MATERIAL BEING APPROXIMATELY 200 MESH AND FINER PARTICLES SIZE ABOVE SAID ONE PARTICLES SIZE TO GIVE BODY TO SAID PASTE, AND SAID ACTIVE ACID CLEANING SOLUTION COMPRISING THE FOLLOWING CONSTITUENTS IN THE INDICATED RANGES OF PERCENTAGE BY WEIGHT OF SAID SOLUTION: PROPORTIONAL RANGE IN ACID CONSTITUENT: PERCENT BY WEIGHT HCL, CONCENTRATED 55-65 HNO3, CONCENTRATED 10-20 H2SO4, CONCENTRATED 10-20 H2O 5-20 BY AMOUNTS BY WEIGHT OF EACH OF SILICA AND ALUMINUN
Claim 2
Dependent Claim
136 words
A METAL CLEANING PASTE CONSISTING ESSENTIALLY OF A MINOR AMOUNT OF FROM 1-20% BY WEIGHT OF FINE PARTICLES OF INERT OXIDE MATERIAL DISPERSED WITHIN A MAJOR AMOUNT OF FROM 80-90% BY WEIGHT OF AN ACTIVE ACID CLEANING SOLUTION, FROM 1-99% BY WEIGHT OF SAID INERT OXIDE MATERIAL CONSISTING ESSENTIALLY OF A MIXTURE OPPROXIMATELY OXIDE OF ONE MICRO PARTICLE SIZE AND SMALLER, THE BALANCE OF SAID INERT MATERIAL BEING APPROXIMATELY 200 MESH AND FINER PARTICLES SIZE ABOVE SAID ONE PARTICLES SIZE TO GIVE BODY TO SAID PASTE, AND SAID ACTIVE ACID CLEANING SOLUTION COMPRISING THE FOLLOWING CONSTITUENTS IN THE INDICATED RANGES OF PERCENTAGE BY WEIGHT OF SAID SOLUTION: PROPORTIONAL RANGE IN ACID CONSTITUENT: PERCENT BY WEIGHT HCL, CONCENTRATED 55-65 HNO3, CONCENTRATED 10-20 H2SO4, CONCENTRATED 10-20 H2O 5-20 BY AMOUNTS BY WEIGHT OF EACH OF SILICA AND ALUMINUN
References Cited (Backward Citations)
GB515278A
Cited
US2472635A
Cited
US2662814A
Cited
US2672449A
Cited
US3073726A
Cited
GB763394A
Cited
US2913418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |