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Official data from INPI

BASES PARA APOIO E ORIENTAÇÃO DE EQUIPAMENTOS DE PERFURAÇÃO NO FUNDO DO MAR.

ConcedidaInvention Patent

Application data

Number

PI7905496

Type

Invention Patent

Filing

08/27/1979

Publication

-

Progress at the INPI

  1. Filing08/27/79
  2. Publication
  3. Examination
  4. Allowance03/22/83
  5. Grant11/29/83
  6. Expired04/25/95

The letters patent expired on 04/25/1995: 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: 11/29/1983. 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

A. M. (pessoa física)

D. C. (pessoa física)

F. F. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/29/1983

RPI 684

Notificação para pagamento de retribuição

#13.1

08/02/1983

RPI 667

Deferimento

#9.1

03/22/1983

RPI 648

8.1

10/13/1982

RPI 625

Exigência - art. 36 da LPI

#6.1

04/06/1982

RPI 598

Carta-patente expirada

#21.1

04/25/1995

RPI 1273

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