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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE PÓ DE PENTÓXIDO DE TÂNTALO.

Arquivada/ExtintaInvention Patent
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Application data

Number

PI9000642

Type

Invention Patent

Filing

02/13/1990

Publication

01/15/1991
View on INPI

Progress at the INPI

  1. Filing02/13/90
  2. Publication01/15/91
  3. Examination06/15/93
  4. Allowance11/10/98
  5. Grant06/01/99
  6. Expired01/02/13

The letters patent expired on 01/02/2013: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 01/02/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hermann C. Starck Berlin GmbH & Co., KG.

DE

Inventors

J. E. (pessoa física)

DE

W. B. (pessoa física)

DE

Technical data

IPC Classification

C01G 35/00

Priority claims

DE

P 39 04 292.8 · 02/14/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 13/02/2010

01/02/2013

RPI 2191

Concessão da patente

#16.1

06/01/1999

RPI 1482

Deferimento

#9.1

11/10/1998

RPI 1453

Exigência - art. 36 da LPI

#6.1

01/13/1998

RPI 1412

Exigência - art. 36 da LPI

#6.1

01/09/1996

RPI 1310

6.2

03/28/1995

RPI 1269

Solicitação de exame técnico

#4.1

06/15/1993

RPI 1176

Publicação do pedido de patente

#3.1

01/15/1991

RPI 1050

Pedido de patente depositado

#2.1

05/15/1990

RPI 1018

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