US Patent No: 7,155,866
Number of patents in Portfolio can not be more than 2000
Cementitious exterior sheathing product having improved interlaminar bond strength
Stats
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Jan 2, 2007
Issued date -
Jan 15, 2003
filing date -
10/342,529
serial no -
In Force
status
Importance
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Abstract
The present invention provides exterior building products, such as roofing and siding, shake, shingles, siding, sheathing, panels, planks, vertical siding, soffit panels, fencing, decking, fascia, corner posts, column corners and trim boards in which a plurality of cementitious layers are provided with an improved interlaminar bond by employing a resinous bond promoter, a rheological agent, mechanical means to distribute fibers in a direction which is perpendicular to the machine direction so as to bridge between layers in the product, or a combination thereof. These techniques help to increase interlaminar bond strength to improve the mechanical properties of the product. When certain resinous bond promoters are used, the additional benefits of water absorption resistance and pigmentation throughout the product can be provided with minimal expense. Improvements in interlaminar bond strength of about 10 46% were observed with a percent elongation improvement of about 7%.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,296,169 Wallboard having improved drying rate due to plural contacting fiber networks | 26 | 1980 | |
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| 6,705,052 Soffit vent | 10 | 2002 | |
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| 5,906,364 Air bladder fixture tooling for supporting circuit board assembly processing | 12 | 1998 | |
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| 4,810,576 Treated glass fibers and aqueous dispersion and nonwoven mat of the glass fibers | 57 | 1987 | |
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| 6,391,131 Method of making glass fiber facing sheet | 24 | 1999 | |
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| 6,001,679 Method for manufacturing polysilicon load | 4 | 1998 | |
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| 4,203,788 Methods for manufacturing cementitious reinforced panels | 66 | 1978 | |
| 4,288,959 Roofing or siding article | 50 | 1979 | |
| 5,387,282 Structural cementitious composition and method of manufacturing the same | 16 | 1993 | |
| 6,258,190 Natural stone tile edging | 20 | 1999 | |
| 6,367,222 Sheet of shingles | 10 | 2000 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jul 2, 2014 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 2, 2018 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |