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Official data from INPI

PROCESSO PARA A SEPARAÇÃO DE AR DE ALIMENTAÇÃO

ConcedidaInvention Patent

Application data

Number

PI8503209

Type

Invention Patent

Filing

07/04/1985

Publication

03/25/1986

Progress at the INPI

  1. Filing07/04/85
  2. Publication03/25/86
  3. Examination07/14/87
  4. Allowance11/01/88
  5. Grant09/26/89
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. C. (pessoa física)

US

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Inventors

H. C. (pessoa física)

US

R. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

628.312 · 07/06/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

02/21/1989

RPI 957

Republicação - classificação IPC

#15.11

11/22/1988

RPI 944

Deferimento

#9.1

11/01/1988

RPI 941

Solicitação de exame técnico

#4.1

07/14/1987

RPI 873

Publicação do pedido de patente

#3.1

03/25/1986

RPI 805

Pedido de patente depositado

#2.1

09/17/1985

RPI 778

Carta-patente expirada

#21.1

Patente extinta em 04/07/2000

07/15/2008

RPI 1958

Pedido de licença compulsória

#20.1

10/25/1994

RPI 1247

20.4

10/18/1994

RPI 1246

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