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Official data from INPI

REGULADOR DE FOLGA HIDRÁULICO SEMI-INDEPENDENTE

ConcedidaInvention Patent

Application data

Number

PI8201044

Type

Invention Patent

Filing

03/07/1982

Publication

01/04/1983

Progress at the INPI

  1. Filing03/07/82
  2. Publication01/04/83
  3. Examination06/14/83
  4. Allowance06/26/84
  5. Grant12/26/84
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 02/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Stanadyne, Inc.

US

See this company's full portfolio

Inventors

M. G. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

239.334 · 03/02/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

02/26/1985

RPI 749

Concessão da patente

#16.1

12/26/1984

RPI 740

Notificação para pagamento de retribuição

#13.1

10/23/1984

RPI 731

Deferimento

#9.1

06/26/1984

RPI 714

Solicitação de exame técnico

#4.1

06/14/1983

RPI 660

Publicação do pedido de patente

#3.1

01/04/1983

RPI 637

Pedido de patente depositado

#2.1

04/13/1982

RPI 599

Carta-patente expirada

#21.1

Patente extinta em 07/03/97

07/01/2008

RPI 1956

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