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Official data from INPI

ELEMENTO DE UNIÃO DE TUBOS

PublicadaInvention Patent

Application data

Number

PI8806002

Type

Invention Patent

Filing

11/17/1988

Publication

08/08/1989

Progress at the INPI

  1. Filing11/17/88
  2. Publication08/08/89
  3. Examination06/25/91
  4. Allowance11/03/92
  5. Grant05/25/93
  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: 08/08/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. H. (pessoa física)

DE

Inventors

W. H. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 37 44 510.3 · 12/30/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

08/08/1989

RPI 981

Pedido de patente depositado

#2.1

03/28/1989

RPI 962

Carta-patente expirada

#21.1

Patente extinta em 17/11/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

05/25/1993

RPI 1173

Notificação para pagamento de retribuição

#13.1

03/23/1993

RPI 1164

Deferimento

#9.1

11/03/1992

RPI 1144

Solicitação de exame técnico

#4.1

06/25/1991

RPI 1073

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