US4751122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof membrane
Assignee: GCP Products UK Ltd
•
Filing: 1986-04-24
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Granted: 1988-06-14
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Expires: 2006-04-24
Abstract
Abstract A preformed structure comprising a sheet-like substrate with a release coating on one side and a waterproofing pressure sensitive adhesive permanently attached to the other side.
Inventors
- 👤 Basil J. May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:56
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/66; E04B1/665; C; C09; C09J; C09J7/00; C09J7/20; C09J7/21; C09J7/30; C09J7/38; E06; E06B; E06B1/00; E06B1/62; E06B2001/628; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/14; Y10T428/141; Y10T428/15; Y10T428/24; Y10T428/24777
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
63 words
A preformed roll shaped structure comprising a first sheet-like paper substrate with a release coating on one side and a waterproofing pressure sensitive adhesive membrane permanently attached to the other side, and second substrate along and ajacent one edge of said first substrate, said second substrate having a release coating on both surface and being removably adhered to said pressure sensitive adhesive membrane.
Claim 2
Dependent Claim
63 words
A preformed roll shaped structure comprising a first sheet-like paper substrate with a release coating on one side and a waterproofing pressure sensitive adhesive membrane permanently attached to the other side, and second substrate along and ajacent one edge of said first substrate, said second substrate having a release coating on both surface and being removably adhered to said pressure sensitive adhesive membrane.
Claim 3
Dependent Claim
21 words
A substrate according to claim 1, wherein said second substrate is readily detachable from said first substrate along a tear line.
Claim 4
Dependent Claim
28 words
A structure according to claim 2 wherein the second substrate constitutes an extended part of the first substrate folded so as to present release coating on both sides.
Claim 5
Dependent Claim
29 words
A structure according to claim 1 wherein said second substrate constitutes an extended part of the first paper substrate folded so as to present release coating on both sides.
Claim 6
Dependent Claim
34 words
A waterproofed assembly comprising the preformed structure of claim 1 applied to a surface and a reinforced self adhesive joint strip positioned in part between said surface and marginal section of said adhesive membrane.
Claim 7
Dependent Claim
14 words
A structure according to claim 1 wherein said second substrate is a paper substrate.
Claim 8
Dependent Claim
13 words
A structure of claim 1 having a width of at least 15 cm.
Claim 9
Dependent Claim
17 words
A structure according to claim 1 further comprising a bitumen impermeable layer applied to the paper. .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |