(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

PROCESSO PARA OBTENÇÃO DE CELULOSE

ArquivadaInvention PatentPCT · EP1995004411

Application data

Number

PI9509642

Type

Invention Patent

Filing

11/09/1995

Publication

09/16/1997

PCT

EP1995004411

Progress at the INPI

  1. Filing11/09/95
  2. Publication09/16/97
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 02/11/2003. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Wacker-Chemie Gmbh

DE

See this company's full portfolio

Inventors

H. W. (pessoa física)

FI

K. L. (pessoa física)

FI

O. N. (pessoa física)

DE

W. B. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 44 40 186.8 · 11/10/1994

Abstract

Patente de Invenção: "PROCESSO PARA OBTENÇÃO DE CELULOSE" . No processo obtém-se celulose a partir de materiais fibrosos como madeira, sendo que os materiais fibrosos são transformados com uma solução de desintegração na presença de compostos de organossilício.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

02/11/2003

RPI 1675

Exigência - art. 36 da LPI

#6.1

09/24/2002

RPI 1655

Notificação de entrada na fase nacional - PCT

#1.3

09/16/1997

RPI 1398

Related

From the same holder

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.