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Official data from INPI

PROJETOR PARA CIMA DE ALTURA REDUZIDA.

PublicadaInvention Patent

Application data

Number

PI8706817

Type

Invention Patent

Filing

12/15/1987

Publication

07/19/1988

Progress at the INPI

  1. Filing12/15/87
  2. Publication07/19/88
  3. Examination01/29/91
  4. Allowance01/31/95
  5. Grant07/25/95
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 07/19/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Minnesota Mining and Manufacturing Company

US

Minnesota Mining And Manufacturing Company

US

See this company's full portfolio

Inventors

D. V. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

944.425 · 12/19/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

07/19/1988

RPI 926

Pedido de patente depositado

#2.1

03/01/1988

RPI 906

Carta-patente expirada

#21.1

Patente extinta em 15/12/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

07/25/1995

RPI 1286

Deferimento

#9.1

01/31/1995

RPI 1261

Exigência - art. 36 da LPI

#6.1

10/11/1994

RPI 1245

Conhecimento de parecer técnico

#7.1

11/17/1992

RPI 1146

Solicitação de exame técnico

#4.1

01/29/1991

RPI 1052

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