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Official data from INPI

APARELHO DE VALVULA PREVENTIVA DE ERUPCAO INTERNA RECUPERAVEL

DeferidaInvention Patent

Application data

Number

PI8307568

Type

Invention Patent

Filing

10/12/1982

Publication

08/28/1984

Progress at the INPI

Awaiting grant fee payment
  1. Filing10/12/82
  2. Publication08/28/84
  3. Examination06/17/86
  4. Allowance12/29/87
  5. Grant
  6. In force

The application was allowed by the INPI on 12/29/1987. The grant of the letters patent is being processed.

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Latest action published by the INPI: 08/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HYDRIL CO [US]

Inventors

P. [. (pessoa física)

P. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.3

08/16/1988

RPI 930

Deferimento

#9.1

12/29/1987

RPI 897

Solicitação de exame técnico

#4.1

06/17/1986

RPI 817

Notificação de entrada na fase nacional - PCT

#1.3

08/28/1984

RPI 723

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