US3281284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion-proofing composition
Assignee: Lubrizol Corp
•
Filing: 1963-03-25
•
Granted: 1966-10-25
•
Expires: 1983-03-25
Abstract
No abstract record available.
Inventors
- 👤 Charles E Dwors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:28
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/08; C09D5/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A LIQUID CORROSION-PROOFING COMPOSITION ADAPTED TO FORM A PROTECTIVE COATING ON METAL ARTICLES WHICH COMPRISES THE COMBINATION OF: (A) THE PRODUCT OBTAINED BY MIXING ONE MOLE OF AT LEAST ONE ALIPHATIC AMINE CONTAINING AT LEAST ABOUT 6 CARBON ATOMS WITH FROM ABOUT 0.25 TO ABOUT 2 MOLES OF AQUEOUS CHROMIC ACID AND HEATING THE MIXTURE TO REMOVE SUBSTANTIALLY ALL WATER PRESENT, AND (B) AN ORGANIC PHOSPHATE COMPLEX PREPARED BY THE PROCESS WHICH COMPRISES MIXING ONE MOLE OF PHOSPHORUS PENTOXIDE, FROM ABOUT 0.2 TO ABOUT 12.5 MOLES OF A COPOLYMER OF ALLYL ALCOHOL AND A STYRENE, AND FROM ABOUT 0.3 TO ABOUT 5.0 MOLES OF AN ALKYLPHENOL, AND HEATING SAID MIXTURE AT A TEMPERATURE WITHIN THE RANGE FROM ABOUT 75*C. TO ABOUT 150*C.
Claim 2
Dependent Claim
122 words
A LIQUID CORROSION-PROOFING COMPOSITION ADAPTED TO FORM A PROTECTIVE COATING ON METAL ARTICLES WHICH COMPRISES THE COMBINATION OF: (A) THE PRODUCT OBTAINED BY MIXING ONE MOLE OF AT LEAST ONE ALIPHATIC AMINE CONTAINING AT LEAST ABOUT 6 CARBON ATOMS WITH FROM ABOUT 0.25 TO ABOUT 2 MOLES OF AQUEOUS CHROMIC ACID AND HEATING THE MIXTURE TO REMOVE SUBSTANTIALLY ALL WATER PRESENT, AND (B) AN ORGANIC PHOSPHATE COMPLEX PREPARED BY THE PROCESS WHICH COMPRISES MIXING ONE MOLE OF PHOSPHORUS PENTOXIDE, FROM ABOUT 0.2 TO ABOUT 12.5 MOLES OF A COPOLYMER OF ALLYL ALCOHOL AND A STYRENE, AND FROM ABOUT 0.3 TO ABOUT 5.0 MOLES OF AN ALKYLPHENOL, AND HEATING SAID MIXTURE AT A TEMPERATURE WITHIN THE RANGE FROM ABOUT 75*C. TO ABOUT 150*C.
References Cited (Backward Citations)
US3133837A
Cited
US3055865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |