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Official data from INPI

PROCESSO DE MOLDAGEM DE PELÍCULA DE POLIETILENO LINEAR DE BAIXA DENSIDADE

Arquivada/ExtintaInvention PatentPCT · US1988001688

Application data

Number

PI8807518

Type

Invention Patent

Filing

05/20/1988

Publication

03/27/1990

PCT

US1988001688

Progress at the INPI

  1. Filing05/20/88
  2. Publication03/27/90
  3. Examination06/25/91
  4. Allowance05/11/99
  5. Grant12/28/99
  6. Expired12/11/12

The letters patent expired on 12/11/2012: 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: 12/11/2012. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

D. N. (pessoa física)

US

K. D. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

053.239 · 05/22/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 28/12/2009

12/11/2012

RPI 2188

Concessão da patente

#16.1

12/28/1999

RPI 1512

Deferimento

#9.1

05/11/1999

RPI 1479

Exigência - art. 36 da LPI

#6.1

08/18/1998

RPI 1443

Exigência - art. 36 da LPI

#6.1

11/11/1997

RPI 1406

Solicitação de exame técnico

#4.1

06/25/1991

RPI 1073

Notificação de entrada na fase nacional - PCT

#1.3

03/27/1990

RPI 1011

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