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Official data from INPI

PROCESSO PARA TRATAMENTO DE RETARDO DE CHAMA DE UM SUBSTRATO COMPREENDENDO FIBRAS

PublicadaInvention Patent

Application data

Number

PI8802694

Type

Invention Patent

Filing

06/03/1988

Publication

12/27/1988

Progress at the INPI

  1. Filing06/03/88
  2. Publication12/27/88
  3. Examination02/05/91
  4. Allowance03/07/95
  5. Grant02/04/97
  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: 12/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Albright & Wilson Limited

AU

Albright & Wilson UK Limited

GB

See this company's full portfolio

Inventors

G. W. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8713224 · 06/05/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/27/1988

RPI 949

Pedido de patente depositado

#2.1

10/25/1988

RPI 940

Carta-patente expirada

#21.1

Patente extinta em 03/06/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

02/04/1997

RPI 1366

Notificação para pagamento de retribuição

#13.1

07/02/1996

RPI 1335

14.4

04/23/1996

RPI 1325

Retificação

#15.6

04/02/1996

RPI 1322

Retificação

#15.3

11/14/1995

RPI 1302

Deferimento

#9.1

03/07/1995

RPI 1266

Exigência - art. 36 da LPI

#6.1

05/03/1994

RPI 1222

Solicitação de exame técnico

#4.1

02/05/1991

RPI 1053

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