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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8104157

Type

Invention Patent

Filing

06/30/1981

Publication

03/16/1982

Progress at the INPI

  1. Filing06/30/81
  2. Publication03/16/82
  3. Examination08/31/82
  4. Allowance12/04/84
  5. Grant05/28/85
  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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. D. (pessoa física)

US

Inventors

D. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

18.8

11/28/1989

RPI 997

Anuidade - prazo legal encerrado

#18.2

08/29/1989

RPI 984

Concessão da patente

#16.1

05/28/1985

RPI 762

Notificação para pagamento de retribuição

#13.1

04/09/1985

RPI 755

Deferimento

#9.1

12/04/1984

RPI 737

Exigência - art. 36 da LPI

#6.1

07/10/1984

RPI 716

Solicitação de exame técnico

#4.1

08/31/1982

RPI 619

Publicação do pedido de patente

#3.1

03/16/1982

RPI 595

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

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