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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8104212

Type

Invention Patent

Filing

07/02/1981

Publication

10/06/1981

Progress at the INPI

  1. Filing07/02/81
  2. Publication10/06/81
  3. Examination01/12/82
  4. Allowance01/10/84
  5. Grant07/31/84
  6. Expired10/08/96

The letters patent expired on 10/08/1996: 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: 08/09/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Bicarbon Industrial e Comercial Ltda.

SP, BR

Inventors

A. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

18.8

08/09/1988

RPI 929

Anuidade - prazo legal encerrado

#18.2

06/21/1988

RPI 922

Concessão da patente

#16.1

07/31/1984

RPI 719

Notificação para pagamento de retribuição

#13.1

05/02/1984

RPI 706

Deferimento

#9.1

01/10/1984

RPI 690

Exigência - art. 36 da LPI

#6.1

06/21/1983

RPI 661

14.1

02/22/1983

RPI 644

Solicitação de exame técnico

#4.1

01/12/1982

RPI 586

Publicação antecipada

#3.2

10/06/1981

RPI 572

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

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