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Official data from INPI

ACOPLAMENTO HIDRÁULICO; E VEDAÇÃO METAL A METAL

PublicadaInvention Patent

Application data

Number

PI8805077

Type

Invention Patent

Filing

10/03/1988

Publication

05/09/1989

Progress at the INPI

  1. Filing10/03/88
  2. Publication05/09/89
  3. Examination06/11/91
  4. Allowance04/26/94
  5. Grant10/25/94
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 05/09/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

National Coupling Company, Inc

US

See this company's full portfolio

Inventors

R. I. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

104.448 · 10/02/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

05/09/1989

RPI 968

Pedido de patente depositado

#2.1

02/08/1989

RPI 955

Carta-patente expirada

#21.1

Patente extinta em 03/10/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

10/25/1994

RPI 1247

Notificação para pagamento de retribuição

#13.1

08/23/1994

RPI 1238

Deferimento

#9.1

04/26/1994

RPI 1221

6.2

07/20/1993

RPI 1181

Solicitação de exame técnico

#4.1

06/11/1991

RPI 1071

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