Patent US3303620A successfully refreshed from Google Patents.
US3303620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joining sheet materials
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1963-12-09
•
Granted: 1967-02-14
•
Expires: 1983-12-09
Abstract
No abstract record available.
Inventors
- 👤 Dawson William
- 👤 Kirby David Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:05
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A GENERALLY RECTANGULAR PANEL OF A SYNTHETIC THERMOPLASTIC POLYMERIC MATERIAL FOR FASTENING TO A SUPPORTING STRUCTURE IN COMBINATION WITH SIMILAR PANELS TO PROVIDE A CLADDING SUCH THAT THE MAIN AREA OF THE PANEL IS SPACED FROM SAID SUPPORTING STRUCTURE, SAID PANEL HAVING A CONTINUOUS RECESS ALONG AT LEAST ONE EDGE BUT NOT MORE THAN TWO EDGES, WHERE TWO EDGES ARE RECESSED THESE BEING ADJACENT EDGES, WHICH RECESS IS IN THE FORM OF A TROUGH HAVING A BASE AT SUCH A DEPTH THAT IT PROVIDES THE MEANS WHEREBY SAID PANEL IS MAINTAINED IN SPACED RELATIONSHIP FROM SAID SUPPORTING STRUCTURE, AND HAS A FLANGE FORMED ON THE LIMB FORMING THE SIDE OF THE TROUGH REMOTE FROM THE MAIN AREA OF THE PANEL, SAID FLANGE LYING IN A PLANE SUBSTANTIALLY PREPENDICULAR TO THE PLANE OF SAID LIMB AND EXTENDING FROM SAID LIMB IN A DIRECTION AWAY FROM
Claim 2
Dependent Claim
144 words
A GENERALLY RECTANGULAR PANEL OF A SYNTHETIC THERMOPLASTIC POLYMERIC MATERIAL FOR FASTENING TO A SUPPORTING STRUCTURE IN COMBINATION WITH SIMILAR PANELS TO PROVIDE A CLADDING SUCH THAT THE MAIN AREA OF THE PANEL IS SPACED FROM SAID SUPPORTING STRUCTURE, SAID PANEL HAVING A CONTINUOUS RECESS ALONG AT LEAST ONE EDGE BUT NOT MORE THAN TWO EDGES, WHERE TWO EDGES ARE RECESSED THESE BEING ADJACENT EDGES, WHICH RECESS IS IN THE FORM OF A TROUGH HAVING A BASE AT SUCH A DEPTH THAT IT PROVIDES THE MEANS WHEREBY SAID PANEL IS MAINTAINED IN SPACED RELATIONSHIP FROM SAID SUPPORTING STRUCTURE, AND HAS A FLANGE FORMED ON THE LIMB FORMING THE SIDE OF THE TROUGH REMOTE FROM THE MAIN AREA OF THE PANEL, SAID FLANGE LYING IN A PLANE SUBSTANTIALLY PREPENDICULAR TO THE PLANE OF SAID LIMB AND EXTENDING FROM SAID LIMB IN A DIRECTION AWAY FROM
References Cited (Backward Citations)
US1502681A
Cited
FR856069A
Cited
US2354485A
Cited
US2432445A
Cited
US2482835A
Cited
GB670471A
Cited
US2931214A
Cited
US2852807A
Cited
US3004295A
Cited
US2982054A
Cited
US3114218A
Cited
US3085367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |