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Official data from INPI

ESTRUTURA MARÍTIMA DE PERFURAÇÃO E PRODUÇÃO

ConcedidaInvention Patent

Application data

Number

PI8200808

Type

Invention Patent

Filing

02/15/1982

Publication

12/21/1982

Progress at the INPI

  1. Filing02/15/82
  2. Publication12/21/82
  3. Examination02/26/85
  4. Allowance07/14/87
  5. Grant02/28/89
  6. Terminated07/25/95

The patent was granted on 02/28/1989 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 02/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Chevron Research Company.

US

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Inventors

B. A. (pessoa física)

US

W. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

235.194 · 02/17/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/28/1989

RPI 958

110

10/25/1988

RPI 940

120

02/17/1988

RPI 904

Recurso

#12.1

09/29/1987

RPI 884

Deferimento

#9.1

07/14/1987

RPI 873

Exigência - art. 36 da LPI

#6.1

12/23/1986

RPI 844

Pedido de certificado de adição de invenção

#5.1

07/16/1985

RPI 769

Solicitação de exame técnico

#4.1

02/26/1985

RPI 749

Publicação do pedido de patente

#3.1

12/21/1982

RPI 635

Pedido de patente depositado

#2.1

04/06/1982

RPI 598

Anuidade - prazo legal encerrado

#18.2

07/25/1995

RPI 1286

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