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Official data from INPI

APARELHO TITULADOR DE OLEFINAS.

ConcedidaInvention Patent

Application data

Number

PI8101299

Type

Invention Patent

Filing

03/06/1981

Publication

10/26/1982

Progress at the INPI

  1. Filing03/06/81
  2. Publication10/26/82
  3. Examination02/16/83
  4. Allowance07/30/85
  5. Grant03/25/86
  6. Expired09/24/96

The letters patent expired on 09/24/1996: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 03/25/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Petróleo Brasileiro S/A - Petrobrás

RJ, BR

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Inventors

S. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/25/1986

RPI 805

Notificação para pagamento de retribuição

#13.1

11/26/1985

RPI 788

Deferimento

#9.1

07/30/1985

RPI 771

8.1

11/20/1984

RPI 735

Solicitação de exame técnico

#4.1

02/16/1983

RPI 643

Publicação do pedido de patente

#3.1

10/26/1982

RPI 627

Carta-patente expirada

#21.1

09/24/1996

RPI 1347

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