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Official data from INPI

VÁLVULAS DE CONTROLE.

ConcedidaInvention Patent

Application data

Number

PI8102302

Type

Invention Patent

Filing

04/14/1981

Publication

12/01/1981

Progress at the INPI

  1. Filing04/14/81
  2. Publication12/01/81
  3. Examination03/30/82
  4. Allowance05/28/85
  5. Grant11/26/85
  6. Terminated09/25/90

The patent was granted on 11/26/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 11/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Commercial Shearig, Inc.,

US

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Inventors

A. W. (pessoa física)

Technical data

IPC Classification

Priority claims

US

140.173 · 04/14/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/26/1985

RPI 788

Notificação para pagamento de retribuição

#13.1

09/17/1985

RPI 778

Deferimento

#9.1

05/28/1985

RPI 762

Republicação - classificação IPC

#15.11

01/08/1985

RPI 742

Exigência - art. 36 da LPI

#6.1

07/31/1984

RPI 719

Solicitação de exame técnico

#4.1

03/30/1982

RPI 597

Publicação antecipada

#3.2

12/01/1981

RPI 580

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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