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Official data from INPI

Película termoplástica.

PublicadaInvention Patent

Application data

Number

PI8705711

Type

Invention Patent

Filing

10/27/1987

Publication

05/31/1988

Progress at the INPI

  1. Filing10/27/87
  2. Publication05/31/88
  3. Examination09/25/90
  4. Allowance01/24/95
  5. Grant06/27/95
  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: 05/31/1988. 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

B. S. (pessoa física)

US

R. B. (pessoa física)

US

W. P. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

926.371 · 10/31/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

05/31/1988

RPI 919

Pedido de patente depositado

#2.1

01/05/1988

RPI 898

Carta-patente expirada

#21.1

Patente extinta em 27/10/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

06/27/1995

RPI 1282

Deferimento

#9.1

01/24/1995

RPI 1260

Exigência - art. 36 da LPI

#6.1

08/30/1994

RPI 1239

Exigência - art. 36 da LPI

#6.1

03/29/1994

RPI 1217

Solicitação de exame técnico

#4.1

09/25/1990

RPI 1034

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