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Official data from INPI

PROCESSO PARA INIBIR A DEPOSIÇÃO DE CROSTA DE SULFATO DE BÁRIO

PublicadaInvention Patent

Application data

Number

PI8803057

Type

Invention Patent

Filing

06/22/1988

Publication

01/10/1989

Progress at the INPI

  1. Filing06/22/88
  2. Publication01/10/89
  3. Examination03/26/91
  4. Allowance11/08/94
  5. Grant06/27/95
  6. Expired09/02/08

The letters patent expired on 09/02/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 01/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Ciba-Geigy AG

CH

FMC Corporation (UK) Limited

GB

See this company's full portfolio

Inventors

D. C. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8714627 · 06/23/1987

GB

8717516 · 07/23/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

01/10/1989

RPI 951

Pedido de patente depositado

#2.1

11/16/1988

RPI 943

Carta-patente expirada

#21.1

Patente extinta em 22/06/2003

09/02/2008

RPI 1965

Transferência deferida

#25.1

Transferido de: Ciba-Geigy Ag

10/06/1998

RPI 1450

Concessão da patente

#16.1

06/27/1995

RPI 1282

Notificação para pagamento de retribuição

#13.1

03/14/1995

RPI 1267

Deferimento

#9.1

11/08/1994

RPI 1249

Exigência - art. 36 da LPI

#6.1

06/21/1994

RPI 1229

Solicitação de exame técnico

#4.1

03/26/1991

RPI 1060

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