Process for preparing scalenohedral precipitated calcium carbonate

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9981855
SERIAL NO

14873924

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing slaking quick lime to obtain slaked lime; and subjecting the slaked lime, without agitation, without prior cooling in a heat exchanger, and in the absence of any additives, to carbonation with carbon dioxide gas to produce PCC. The newly prepared product develops better performance thanks to improved resistance during processing.

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
OMYA INTERNATIONAL AG4665 OFTRINGEN

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Maurer, Marc Village-Neuf, FR 47 318
Saunders, George Brandon, US 10 30
Skrzypczak, Mathieu Terrace Park, US 12 15
Wenk, Joe Kingsport, US 4 1

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
7.5 Year Payment $3600.00 $1800.00 $900.00 Nov 29, 2025
11.5 Year Payment $7400.00 $3700.00 $1850.00 Nov 29, 2029
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