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Official data from INPI

EQUIPAMENTO DE COMPLETAÇÃO, MANUTENÇÃO, RECUPERAÇÃO E PERFURAÇÃO DE POÇOS TUBULARES PROFUNDOS PARA CAPTAÇÃO DE ÁGUA SUBTERRÂNEA

Em AnáliseUtility Model
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Application data

Number

MU6900013

Type

Utility Model

Filing

01/03/1989

Publication

08/21/1990
View on INPI

Progress at the INPI

  1. Filing01/03/89
  2. Publication08/21/90
  3. Examination12/18/90
  4. Allowance10/25/94
  5. Grant04/25/95
  6. Expired11/20/01

The letters patent expired on 11/20/2001: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 08/15/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Prominas Brasil Equipamentos Ltda

SP, BR

Inventors

U. C. (pessoa física)

BR

Technical data

IPC Classification

E21B 7/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

14.4

08/15/1989

RPI 982

Pedido de patente depositado

#2.1

02/14/1989

RPI 956

Carta-patente expirada

#21.1

Patente extinta em 03/01/1999 conforme o disposto no artigo 24 da Lei 5772/71 (CPI).

11/20/2001

RPI 1611

Concessão da patente

#16.1

04/25/1995

RPI 1273

Deferimento

#9.1

10/25/1994

RPI 1247

Exigência - art. 36 da LPI

#6.1

05/03/1994

RPI 1222

14.4

05/04/1993

RPI 1170

Solicitação de exame técnico

#4.1

12/18/1990

RPI 1046

Publicação do pedido de patente

#3.1

08/21/1990

RPI 1029

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