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Official data from INPI

CONECTOR DE REPARO DE REVESTIMENTO E PROCESSO DE REPARAR UM REVESTIMENTO DANIFICADO DENTRO DE UM FURO DE POÇO

PublicadaInvention Patent

Application data

Number

PI8801846

Type

Invention Patent

Filing

04/19/1988

Publication

11/22/1988

Progress at the INPI

  1. Filing04/19/88
  2. Publication11/22/88
  3. Examination02/13/91
  4. Allowance10/20/92
  5. Grant05/25/93
  6. Terminated12/31/96

The patent was granted on 05/25/1993 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 11/22/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cameron Iron Works USA, Inc

US

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Inventors

T. C. (pessoa física)

US

W. T. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

044.583 · 04/30/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/22/1988

RPI 944

Pedido de patente depositado

#2.1

09/20/1988

RPI 935

Anuidade - prazo legal encerrado

#18.2

12/31/1996

RPI 1361

Notificação para pagamento de retribuição

#13.1

05/10/1994

RPI 1223

Concessão da patente

#16.1

05/25/1993

RPI 1173

Deferimento

#9.1

10/20/1992

RPI 1142

Solicitação de exame técnico

#4.1

02/13/1991

RPI 1054

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