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Official data from INPI

COMPOSIÇÃO E FILME DE POLÍMERO DE ETILENO

Arquivada/ExtintaInvention PatentPCT · US1994004406

Application data

Number

PI9406668

Type

Invention Patent

Filing

04/19/1994

Publication

01/23/1996

PCT

US1994004406

Progress at the INPI

  1. Filing04/19/94
  2. Publication01/23/96
  3. Examination
  4. Allowance11/16/99
  5. Grant06/13/00
  6. Expired06/30/15

The letters patent expired on 06/30/2015: 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: 06/30/2015. 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

G. K. (pessoa física)

US

P. C. (pessoa física)

US

R. M. (pessoa física)

US

S. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

08/054.379 · 04/28/1993

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 19/04/2014

06/30/2015

RPI 2321

Concessão da patente

#16.1

06/13/2000

RPI 1536

Deferimento

#9.1

11/16/1999

RPI 1506

Notificação de entrada na fase nacional - PCT

#1.3

01/23/1996

RPI 1312

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