Bioslurry-induced water barrier and process of forming thereof

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11130971
APP PUB NO 20200318141A1
SERIAL NO

16652628

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

Disclosed herein is a process of forming an inorganic water barrier layer on top of a porous substrate by means of microbially induced calcium carbonate or calcite precipitation (MICP), the process comprising the steps of: providing a porous substrate having a surface; depositing a urease-active slurry onto the surface of the porous substrate to form a bioslurry layer; and subjecting the bioslurry layer to one or more treatments with an aqueous solution comprising urea and a water barrier source material to convert the bioslurry layer into an inorganic water barrier layer. The process further comprises a step of covering the bioslurry layer with a layer of a porous material that has a surface, where the one or more treatments with an aqueous solution comprising urea and a water barrier source material are initially applied to the surface of the porous material. The porous material acts as a reservoir for the aqueous solution to sustain the biocementation of bioslurry into the desired inorganic water barrier layer.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
NANYANG TECHNOLOGICAL UNIVERSITY50 NANYANG AVENUE SINGAPORE SINGAPORE CITY SINGAPORE

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cheng, Liang Singapore, SG 89 333
Chu, Jian Singapore, SG 7 78
Yang, Yang Singapore, SG 1214 8701

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Mar 28, 2025
7.5 Year Payment $3600.00 $1800.00 $900.00 Mar 28, 2029
11.5 Year Payment $7400.00 $3700.00 $1850.00 Mar 28, 2033
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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