Patent US2987240A successfully refreshed from Google Patents.
US2987240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film
Assignee: EIDP Inc
•
Filing: 1959-06-08
•
Granted: 1961-06-06
•
Expires: 1979-06-08
Abstract
No abstract record available.
Inventors
- 👤 Boyer Nolan Davidson
- 👤 Lewis Donald Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:06
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/02; B29C59/022; B65; B65D; B65D29/00; B65D29/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A THERMOPLASTIC RESIN FILM COMPRISING A FILM CONTAINING CIRCULAR PERFORATIONS HAVING DIAMETERS FROM 1/64 TO 3/64 INCH, PLACED 1/4 TO 1/2 INCH APART, SAID FILM BEING EMBOSSED WITH A DISCONTINUOUS RIDGE AN EQUAL DISTANCE BETWEEN EACH OF THE ADJOINING PERFORATIONS.
Claim 2
Dependent Claim
40 words
A THERMOPLASTIC RESIN FILM COMPRISING A FILM CONTAINING CIRCULAR PERFORATIONS HAVING DIAMETERS FROM 1/64 TO 3/64 INCH, PLACED 1/4 TO 1/2 INCH APART, SAID FILM BEING EMBOSSED WITH A DISCONTINUOUS RIDGE AN EQUAL DISTANCE BETWEEN EACH OF THE ADJOINING PERFORATIONS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |