Patent US2809908A successfully refreshed from Google Patents.
US2809908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction panel
Assignee: Keyes Fibre Corp
•
Filing: 1953-12-28
•
Granted: 1957-10-15
•
Expires: 1973-12-28
Abstract
No abstract record available.
Inventors
- 👤 Richard S French
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:54
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/3405; E06; E06B; E06B3/00; E06B3/70; E06B3/7015; E04C2002/3411; E04C2002/3433; E04C2002/3438; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/234; Y10T428/239; Y10T428/24; Y10T428/24628; Y10T428/24661; Y10T428/24669; Y10T428/24678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A FILLER FOR GENERALLY HOLLOW PANELS COMPRISING A GENERALLY RECTANGULAR, MOLDED PULP SHEET, A PLURALITY OF HOLLOW EMBOSSMENTS PROVIDED WITH INCLINED SIDE WALLS AND HAVING CLOSURE WALLS AT ONE END, THE OPPOSITE ENDS THEREOF BEING OPEN, SAID EMBOSSMENTS BEING ARRANGED IN PARALLEL AND PERPENDICULAR ROWS AND INCLUDING COMPLEMENTARY, CONTINUOUS RECESSES BETWEEN ADJACENT ROWS OF EMBOSSMENTS, EACH OF SAID RECESSES HAVING ONE OPEN AND ONE CLOSED END, FLANGES FORMED AT THE MARGINAL PORTIONS OF SAID SHEET, SAID FLANGES BEING PROVIDED WITH ALTERNATE LANDS AND GROOVES, SAID LANDS LYING IN THE SAME PLACE AS THE CLOSED ENDS OF SAID EMBOSSMENTS, EACH LAND BEING ALIGNED WITH A ROW OF EMBOSSMENTS, SAID GROOVES LYING IN A PLANE WHICH IS INTERMEDIATE THE PLANES OF THE CLOSED END OF SAID EMBOSSMENTS AND THE OPEN ENDS THEREOF.
Claim 2
Dependent Claim
130 words
A FILLER FOR GENERALLY HOLLOW PANELS COMPRISING A GENERALLY RECTANGULAR, MOLDED PULP SHEET, A PLURALITY OF HOLLOW EMBOSSMENTS PROVIDED WITH INCLINED SIDE WALLS AND HAVING CLOSURE WALLS AT ONE END, THE OPPOSITE ENDS THEREOF BEING OPEN, SAID EMBOSSMENTS BEING ARRANGED IN PARALLEL AND PERPENDICULAR ROWS AND INCLUDING COMPLEMENTARY, CONTINUOUS RECESSES BETWEEN ADJACENT ROWS OF EMBOSSMENTS, EACH OF SAID RECESSES HAVING ONE OPEN AND ONE CLOSED END, FLANGES FORMED AT THE MARGINAL PORTIONS OF SAID SHEET, SAID FLANGES BEING PROVIDED WITH ALTERNATE LANDS AND GROOVES, SAID LANDS LYING IN THE SAME PLACE AS THE CLOSED ENDS OF SAID EMBOSSMENTS, EACH LAND BEING ALIGNED WITH A ROW OF EMBOSSMENTS, SAID GROOVES LYING IN A PLANE WHICH IS INTERMEDIATE THE PLANES OF THE CLOSED END OF SAID EMBOSSMENTS AND THE OPEN ENDS THEREOF.
References Cited (Backward Citations)
US1000694A
Cited
GB546397A
Cited
US2385352A
Cited
FR969140A
Cited
US2481046A
Cited
US2689988A
Cited
US2652878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |