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Official data from INPI

TUBO PERFURADOR E APARELHO APERFEIÇOADO E PROCESSO PARA ACOPLAR TUBOS PERFURADORES

PublicadaInvention Patent

Application data

Number

PI8803784

Type

Invention Patent

Filing

07/29/1988

Publication

03/07/1989

Progress at the INPI

  1. Filing07/29/88
  2. Publication03/07/89
  3. Examination05/07/91
  4. Allowance04/12/94
  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: 03/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Pangaea Enterprises,Inc

US

Inventors

H. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

079461 · 07/30/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

03/07/1989

RPI 959

Pedido de patente depositado

#2.1

01/03/1989

RPI 950

Carta-patente expirada

#21.1

Patente extinta em 29/07/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

10/25/1994

RPI 1247

Notificação para pagamento de retribuição

#13.1

08/09/1994

RPI 1236

Deferimento

#9.1

04/12/1994

RPI 1219

6.2

07/20/1993

RPI 1181

Solicitação de exame técnico

#4.1

05/07/1991

RPI 1066

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