US3338756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing coatings
Assignee: Hooker Chemical Corp
•
Filing: 1963-10-28
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Granted: 1967-08-29
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Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 Leon Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:25
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/02; C23C22/03; C09; C09D; C09D9/00; C09D9/005; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD FOR REMOVING TENACIOUS, NORMALLY WATERINSOLUBLE PROTECTIVE FILMS SELECTED FROM THE GROUP CONSISTING OF PAINT, ENAMEL, VARNISH AND LACQUER FILMS FROM SURFACES BEARING SUCH FILMS WHICH COMPRISING A CHLORINATED ALIPHATIC HYDROCATBON SELECTED FROM THE GROUP CONSISTING OF A DICHLORORETHYLENE AND PERCHLOROETHYLENE, ORTHO PHOSPHRIC ACID AND A SOLUBILIZING AGENT FOR THE ACID IN THE HYDROCARBON, AND MAINAINING THE COMPOSITION IN CONTACT WITH THE SURFACE FOR A PERIOD OF TIME SUFFICIENT TO LOOSEN PROTECTIVE FILM FROM THE SURFACE.
Claim 2
Independent Claim
77 words
A METHOD FOR REMOVING TENACIOUS, NORMALLY WATERINSOLUBLE PROTECTIVE FILMS SELECTED FROM THE GROUP CONSISTING OF PAINT, ENAMEL, VARNISH AND LACQUER FILMS FROM SURFACES BEARING SUCH FILMS WHICH COMPRISING A CHLORINATED ALIPHATIC HYDROCATBON SELECTED FROM THE GROUP CONSISTING OF A DICHLORORETHYLENE AND PERCHLOROETHYLENE, ORTHO PHOSPHRIC ACID AND A SOLUBILIZING AGENT FOR THE ACID IN THE HYDROCARBON, AND MAINAINING THE COMPOSITION IN CONTACT WITH THE SURFACE FOR A PERIOD OF TIME SUFFICIENT TO LOOSEN PROTECTIVE FILM FROM THE SURFACE.
References Cited (Backward Citations)
US2755209A
Cited
US2852471A
Cited
GB834707A
Cited
US2938111A
Cited
US3197345A
Cited
US3220890A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |