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Official data from INPI

APERFEIÇOAMENTOS INTRODUZIDOS EM ESPOLETA DE RETARDO

Arquivada/ExtintaInvention Patent

Application data

Number

PI8805937

Type

Invention Patent

Filing

11/09/1988

Publication

04/24/1990

Progress at the INPI

  1. Filing11/09/88
  2. Publication04/24/90
  3. Examination01/08/91
  4. Allowance04/18/95
  5. Grant11/28/95
  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: 09/02/2008. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Britanite S/A Indústrias Químicas

PR, BR

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Inventors

D. S. (pessoa física)

BR

R. T. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 09/11/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

11/28/1995

RPI 1304

Notificação para pagamento de retribuição

#13.1

09/12/1995

RPI 1293

Deferimento

#9.1

04/18/1995

RPI 1272

14.4

06/18/1991

RPI 1072

Solicitação de exame técnico

#4.1

01/08/1991

RPI 1049

Publicação antecipada

#3.2

04/24/1990

RPI 1015

Pedido de patente depositado

#2.1

02/06/1990

RPI 1005

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