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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8102711

Type

Invention Patent

Filing

05/04/1981

Publication

01/26/1982

Progress at the INPI

  1. Filing05/04/81
  2. Publication01/26/82
  3. Examination03/13/84
  4. Allowance12/16/86
  5. Grant08/25/87
  6. Expired10/01/96

The letters patent expired on 10/01/1996: 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: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Standard Oil Company

US

See this company's full portfolio

Inventors

D. D. (pessoa física)

M. E. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

Notificação para pagamento de retribuição

#13.1

05/05/1987

RPI 863

Republicação - classificação IPC

#15.11

03/17/1987

RPI 856

Deferimento

#9.1

12/16/1986

RPI 843

Exigência - art. 36 da LPI

#6.1

11/05/1985

RPI 785

Exigência - art. 36 da LPI

#6.1

01/15/1985

RPI 743

Solicitação de exame técnico

#4.1

03/13/1984

RPI 699

Publicação do pedido de patente

#3.1

01/26/1982

RPI 588

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

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