US2666693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid treatment of plastic articles
Assignee: Pm Ind Inc
•
Filing: 1952-01-24
•
Granted: 1954-01-19
•
Expires: 1972-01-24
Abstract
No abstract record available.
Inventors
- 👤 Meretey Zoltan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:43
CPC Classifications
B; B44; B44C; B44C1/00; B44C1/22; B44C1/227; C; C08; C08J; C08J7/00; C08J7/12; C08J7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A METHOD OF ETCHING THE SURFACE OF A RIGID SYNTHETIC RESIN ARTICLE CONTAINING A FILLER, TO EXPOSE THE FILLER, WHICH COMPRISES THE STEPS OF TREATING SAID ARTICLE WITH AN ACID SELECTED FROM THE GROUP CONSISTING OF NITRIC ACID, SULPHURIC ACID AND HYDROCHLORIC ACID, REMOVING THE ACID AND DRYING THE ARTICLE.
Claim 2
Independent Claim
50 words
A METHOD OF ETCHING THE SURFACE OF A RIGID SYNTHETIC RESIN ARTICLE CONTAINING A FILLER, TO EXPOSE THE FILLER, WHICH COMPRISES THE STEPS OF TREATING SAID ARTICLE WITH AN ACID SELECTED FROM THE GROUP CONSISTING OF NITRIC ACID, SULPHURIC ACID AND HYDROCHLORIC ACID, REMOVING THE ACID AND DRYING THE ARTICLE.
References Cited (Backward Citations)
US2366788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |