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Official data from INPI

ADITIVO PARA LAVAGENS DE PERFURAÇÕES INVERTIDAS À BASE DE ÓLEO

ArquivadaInvention PatentPCT · EP2002000772

Application data

Number

PI0206858

Type

Invention Patent

Filing

01/25/2002

Publication

01/13/2004

PCT

EP2002000772

Progress at the INPI

  1. Filing01/25/02
  2. Publication01/13/04
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: examination was not requested within the 36 months following the 01/25/2002 filing, the deadline set by art. 33 of the Brazilian IP Act. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 03/27/2018. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cognis Deutschland GMBH & CO. KG

DE

See this company's full portfolio

Inventors

F. B. (pessoa física)

DE

H. M. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

101 04 869.6 · 02/03/2001

Abstract

"ADITIVO PARA LAVAGENS DE PERFURAÇÕES INVERTIDAS À BASE DE ÓLEO". São propostas misturas de acetato de cálcio e de magnésio como substituto para cloreto de cálcio em lavagens de perfurações invertidas.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C09K 7/06.

03/27/2018

RPI 2464

Arquivamento definitivo - Art. 33 da LPI

#11.1.1

12/26/2006

RPI 1877

Arquivamento - Art. 33 da LPI

#11.1

09/26/2006

RPI 1864

Notificação de entrada na fase nacional - PCT

#1.3

01/13/2004

RPI 1723

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