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Official data from INPI

DISPOSITIVO DE CONEXÃO POR CRAVAMENTO PARA ELEMENTOS TUBULARES

Arquivada/ExtintaInvention Patent

Application data

Number

PI8904208

Type

Invention Patent

Filing

08/22/1989

Publication

02/26/1991

Progress at the INPI

  1. Filing08/22/89
  2. Publication02/26/91
  3. Examination01/26/93
  4. Allowance01/03/95
  5. Grant07/25/95
  6. Expired12/22/09

The letters patent expired on 12/22/2009: 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: 12/22/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcoa Alumínio S/A

MG, BR

See this company's full portfolio

Inventors

L. S. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 22/08/2004

12/22/2009

RPI 2033

Concessão da patente

#16.1

07/25/1995

RPI 1286

Notificação para pagamento de retribuição

#13.1

05/23/1995

RPI 1277

Deferimento

#9.1

01/03/1995

RPI 1257

Solicitação de exame técnico

#4.1

01/26/1993

RPI 1156

Publicação do pedido de patente

#3.1

02/26/1991

RPI 1056

Pedido de patente depositado

#2.1

01/16/1990

RPI 1002

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