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Official data from INPI

PROCESSO E APARELHO PARA REVESTIR UM CANO RECOBERTO COM REVESTIMENTO DE POLÍMERO

Arquivada/ExtintaInvention Patent

Application data

Number

PI8904032

Type

Invention Patent

Filing

08/10/1989

Publication

03/20/1990

Progress at the INPI

  1. Filing08/10/89
  2. Publication03/20/90
  3. Examination11/20/90
  4. Allowance07/27/93
  5. Grant05/31/94
  6. Expired12/22/09

The letters patent expired on 12/22/2009: 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: 12/22/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

British Gas Plc

GB

See this company's full portfolio

Inventors

B. M. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

19063.2 · 08/11/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 10/08/2004

12/22/2009

RPI 2033

Concessão da patente

#16.1

05/31/1994

RPI 1226

Notificação para pagamento de retribuição

#13.1

01/18/1994

RPI 1207

Deferimento

#9.1

07/27/1993

RPI 1182

Exigência - art. 36 da LPI

#6.1

07/21/1992

RPI 1129

Solicitação de exame técnico

#4.1

11/20/1990

RPI 1042

Publicação do pedido de patente

#3.1

03/20/1990

RPI 1010

Pedido de patente depositado

#2.1

01/09/1990

RPI 1001

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